added bangla-bert-base model card and also modified other model cards
Hi,
I added model card for bangla-bert-base model and also modified some typo in other model cards also. 
Please check and if possible please merge. 

thanks and regards
Sagor

This is great, thanks for sharing! 

In case you have time and want to contribute default sample inputs for Bengali, you can just open a pull request against https://github.com/huggingface/widgets-server/blob/master/DefaultWidget.ts

Your model page's inference widgets will then display relevant sample inputs.<|||||>PS/ your models are now correctly linked from https://huggingface.co/datasets/lince<|||||>Hi,
Thank you so much. 
I will create a pull request for DefaultWidget.ts

regards
Sagor