fixed belebele (#1267)

lm_eval/tasks/belebele/belebele_yor_Latn.yaml

-"dataset_name": "yor_Latn"
+"fewshot_split": "yor_Latn"
 "include": "_default_template_yaml"
 "task": "belebele_yor_Latn"
+"test_split": "yor_Latn"

lm_eval/tasks/belebele/belebele_zho_Hans.yaml

-"dataset_name": "zho_Hans"
+"fewshot_split": "zho_Hans"
 "include": "_default_template_yaml"
 "task": "belebele_zho_Hans"
+"test_split": "zho_Hans"

lm_eval/tasks/belebele/belebele_zho_Hant.yaml

-"dataset_name": "zho_Hant"
+"fewshot_split": "zho_Hant"
 "include": "_default_template_yaml"
 "task": "belebele_zho_Hant"
+"test_split": "zho_Hant"

lm_eval/tasks/belebele/belebele_zsm_Latn.yaml

-"dataset_name": "zsm_Latn"
+"fewshot_split": "zsm_Latn"
 "include": "_default_template_yaml"
 "task": "belebele_zsm_Latn"
+"test_split": "zsm_Latn"

lm_eval/tasks/belebele/belebele_zul_Latn.yaml

-"dataset_name": "zul_Latn"
+"fewshot_split": "zul_Latn"
 "include": "_default_template_yaml"
 "task": "belebele_zul_Latn"
+"test_split": "zul_Latn"