[docs] index page has overflowing image
The current index page has an overflowing image for huggingface.co/support as shown below.
![image](https://user-images.githubusercontent.com/29195190/201600669-f5bf8b40-ffc2-4c93-aada-27ba50209671.png)

This can be fixed easily by adding `width=100%;` to the inline style.
Note: all current languages are affected.