[model_cards] Switch all languages codes to ISO-639-{1,2,3}

model_cards/clue/albert_chinese_small/README.md

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-language: chinese
+language: zh
 ---
 
 ## albert_chinese_small

model_cards/clue/albert_chinese_tiny/README.md

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-language: chinese
+language: zh
 ---
 
 ## albert_chinese_tiny

model_cards/clue/roberta_chinese_3L312_clue_tiny/README.md

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-language: chinese
+language: zh
 ---
 
 # Introduction

model_cards/clue/roberta_chinese_base/README.md

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-language: chinese
+language: zh
 ---
 
 ## roberta_chinese_base

model_cards/clue/roberta_chinese_large/README.md

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-language: chinese
+language: zh
 ---
 
 ## roberta_chinese_large

model_cards/clue/xlnet_chinese_large/README.md

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-language: chinese
+language: zh
 ---
 
 ## xlnet_chinese_large

model_cards/daigo/bert-base-japanese-sentiment/README.md

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 language:
-- japanese
+- ja
 ---
 
 binary classification

model_cards/dbmdz/bert-base-german-cased/README.md

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-language: german
+language: de
 license: mit
 ---
 

model_cards/dbmdz/bert-base-german-europeana-cased/README.md

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-language: german
+language: de
 license: mit
 tags:
   - "historic german"

model_cards/dbmdz/bert-base-german-europeana-uncased/README.md

 ---
-language: german
+language: de
 license: mit
 tags:
   - "historic german"

model_cards/dbmdz/bert-base-german-uncased/README.md

 ---
-language: german
+language: de
 license: mit
 ---
 

model_cards/dbmdz/bert-base-italian-cased/README.md

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-language: italian
+language: it
 license: mit
 ---
 

model_cards/dbmdz/bert-base-italian-uncased/README.md

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-language: italian
+language: it
 license: mit
 ---
 

model_cards/dbmdz/bert-base-italian-xxl-cased/README.md

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-language: italian
+language: it
 license: mit
 ---
 

model_cards/dbmdz/bert-base-italian-xxl-uncased/README.md

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-language: italian
+language: it
 license: mit
 ---
 

model_cards/dbmdz/bert-base-turkish-128k-cased/README.md

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-language: turkish
+language: tr
 license: mit
 ---
 

model_cards/dbmdz/bert-base-turkish-128k-uncased/README.md

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-language: turkish
+language: tr
 license: mit
 ---
 

model_cards/dbmdz/bert-base-turkish-cased/README.md

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-language: turkish
+language: tr
 license: mit
 ---
 

model_cards/dbmdz/bert-base-turkish-uncased/README.md

 ---
-language: turkish
+language: tr
 license: mit
 ---
 

model_cards/dbmdz/distilbert-base-turkish-cased/README.md

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-language: turkish
+language: tr
 license: mit
 ---