{% check %} and {% submit %} cause 404 in README.md

[mkotsovoulou]

I cloned cs50/labs/python, to start creating my own lab and I noticed the following:

1) in .cs50.yaml

 lab50:
  file: mario.py

causes a: 400 Bad Request Please let the author of this lab know that file should now be files in .cs50.yml! and the error is fixed when changed to:

 lab50:
       files: 
       - !include mario.py

2) in README.md

{% check %} and {% submit %} cause 404 in the left frame of lab.cs50.io 

when removed, everything works well

[ndhbr]

I have just noticed the same thing. Are there already solutions for this?