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

model_cards/dbmdz/electra-base-turkish-cased-discriminator/README.md

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

model_cards/dbmdz/electra-small-turkish-cased-discriminator/README.md

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

model_cards/deepset/bert-base-german-cased-oldvocab/README.md

 ---
-language: german
+language: de
 thumbnail: https://static.tildacdn.com/tild6438-3730-4164-b266-613634323466/german_bert.png
 tags:
 - exbert

model_cards/distilbert-base-uncased-README.md

 ---
-language: english
+language: en
 tags:
 - exbert
 license: apache-2.0

model_cards/dkleczek/bert-base-polish-cased-v1/README.md

 ---
-language: polish
+language: pl
 thumbnail: https://raw.githubusercontent.com/kldarek/polbert/master/img/polbert.png
 ---
 

model_cards/dkleczek/bert-base-polish-uncased-v1/README.md

 ---
-language: polish
+language: pl
 thumbnail: https://raw.githubusercontent.com/kldarek/polbert/master/img/polbert.png
 ---
 

model_cards/dumitrescustefan/bert-base-romanian-cased-v1/README.md

 ---
-language: romanian
+language: ro
 ---
 
 # bert-base-romanian-cased-v1

model_cards/dumitrescustefan/bert-base-romanian-uncased-v1/README.md

 ---
-language: romanian
+language: ro
 ---
 
 # bert-base-romanian-uncased-v1

model_cards/fmikaelian/camembert-base-fquad/README.md

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-language: french
+language: fr
 ---
 
 # camembert-base-fquad

model_cards/fmikaelian/camembert-base-squad/README.md

 ---
-language: french
+language: fr
 ---
 
 # camembert-base-squad

model_cards/fmikaelian/flaubert-base-uncased-squad/README.md

 ---
-language: french
+language: fr
 ---
 
 # flaubert-base-uncased-squad

model_cards/google/electra-base-discriminator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/electra-base-generator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/electra-large-discriminator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/electra-large-generator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/electra-small-discriminator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/electra-small-generator/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/google/mobilebert-uncased/README.md

 ---
-language: english
+language: en
 thumbnail: https://huggingface.co/front/thumbnails/google.png
 
 license: apache-2.0

model_cards/gpt2-README.md

 ---
-language: english
+language: en
 tags:
 - exbert
 

model_cards/henryk/bert-base-multilingual-cased-finetuned-dutch-squad2/README.md

 ---
-language: dutch
+language: nl
 ---
 
 # Multilingual + Dutch SQuAD2.0