Fix ```mmlu_continuation``` subgroup names to fit Readme and other variants (#3137)

* Update continuation group names to fit Readme

* added changelog to readme and switched datasets form hails to cais

* added missing new line at end of readme

lm_eval/tasks/mmlu/continuation/mmlu_machine_learning.yaml

 "dataset_name": "machine_learning"
 "description": "The following are questions (with answers) about machine\
   \ learning.\n\n"
-"tag": "mmlu_continuation_stem"
+"tag": "mmlu_stem_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_machine_learning"
+"task": "mmlu_machine_learning_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_management.yaml

 "dataset_name": "management"
 "description": "The following are questions (with answers) about management.\n\
   \n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_management"
+"task": "mmlu_management_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_marketing.yaml

 "dataset_name": "marketing"
 "description": "The following are questions (with answers) about marketing.\n\
   \n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_marketing"
+"task": "mmlu_marketing_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_medical_genetics.yaml

 "dataset_name": "medical_genetics"
 "description": "The following are questions (with answers) about medical\
   \ genetics.\n\n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_medical_genetics"
+"task": "mmlu_medical_genetics_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_miscellaneous.yaml

 "dataset_name": "miscellaneous"
 "description": "The following are questions (with answers) about miscellaneous.\n\
   \n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_miscellaneous"
+"task": "mmlu_miscellaneous_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_moral_disputes.yaml

 "dataset_name": "moral_disputes"
 "description": "The following are questions (with answers) about moral\
   \ disputes.\n\n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_moral_disputes"
+"task": "mmlu_moral_disputes_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_moral_scenarios.yaml

 "dataset_name": "moral_scenarios"
 "description": "The following are questions (with answers) about moral\
   \ scenarios.\n\n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_moral_scenarios"
+"task": "mmlu_moral_scenarios_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_nutrition.yaml

 "dataset_name": "nutrition"
 "description": "The following are questions (with answers) about nutrition.\n\
   \n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_nutrition"
+"task": "mmlu_nutrition_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_philosophy.yaml

 "dataset_name": "philosophy"
 "description": "The following are questions (with answers) about philosophy.\n\
   \n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_philosophy"
+"task": "mmlu_philosophy_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_prehistory.yaml

 "dataset_name": "prehistory"
 "description": "The following are questions (with answers) about prehistory.\n\
   \n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_prehistory"
+"task": "mmlu_prehistory_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_professional_accounting.yaml

 "dataset_name": "professional_accounting"
 "description": "The following are questions (with answers) about professional\
   \ accounting.\n\n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_professional_accounting"
+"task": "mmlu_professional_accounting_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_professional_law.yaml

 "dataset_name": "professional_law"
 "description": "The following are questions (with answers) about professional\
   \ law.\n\n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_professional_law"
+"task": "mmlu_professional_law_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_professional_medicine.yaml

 "dataset_name": "professional_medicine"
 "description": "The following are questions (with answers) about professional\
   \ medicine.\n\n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_professional_medicine"
+"task": "mmlu_professional_medicine_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_professional_psychology.yaml

 "dataset_name": "professional_psychology"
 "description": "The following are questions (with answers) about professional\
   \ psychology.\n\n"
-"tag": "mmlu_continuation_social_sciences"
+"tag": "mmlu_social_sciences_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_professional_psychology"
+"task": "mmlu_professional_psychology_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_public_relations.yaml

 "dataset_name": "public_relations"
 "description": "The following are questions (with answers) about public\
   \ relations.\n\n"
-"tag": "mmlu_continuation_social_sciences"
+"tag": "mmlu_social_sciences_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_public_relations"
+"task": "mmlu_public_relations_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_security_studies.yaml

 "dataset_name": "security_studies"
 "description": "The following are questions (with answers) about security\
   \ studies.\n\n"
-"tag": "mmlu_continuation_social_sciences"
+"tag": "mmlu_social_sciences_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_security_studies"
+"task": "mmlu_security_studies_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_sociology.yaml

 "dataset_name": "sociology"
 "description": "The following are questions (with answers) about sociology.\n\
   \n"
-"tag": "mmlu_continuation_social_sciences"
+"tag": "mmlu_social_sciences_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_sociology"
+"task": "mmlu_sociology_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_us_foreign_policy.yaml

 "dataset_name": "us_foreign_policy"
 "description": "The following are questions (with answers) about us\
   \ foreign policy.\n\n"
-"tag": "mmlu_continuation_social_sciences"
+"tag": "mmlu_social_sciences_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_us_foreign_policy"
+"task": "mmlu_us_foreign_policy_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_virology.yaml

 "dataset_name": "virology"
 "description": "The following are questions (with answers) about virology.\n\
   \n"
-"tag": "mmlu_continuation_other"
+"tag": "mmlu_other_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_virology"
+"task": "mmlu_virology_continuation"

lm_eval/tasks/mmlu/continuation/mmlu_world_religions.yaml

 "dataset_name": "world_religions"
 "description": "The following are questions (with answers) about world\
   \ religions.\n\n"
-"tag": "mmlu_continuation_humanities"
+"tag": "mmlu_humanities_continuation"
 "include": "_continuation_template_yaml"
-"task": "mmlu_continuation_world_religions"
+"task": "mmlu_world_religions_continuation"