Minor update

Author: svekars

docs/source/contributing.md

@@ -10,4 +10,4 @@ See
 [CONTRIBUTING.md](https://github.com/pytorch/executorch/blob/main/CONTRIBUTING.md)
 for detailed information about contributing to ExecuTorch.
 
-Join us on [Discord](https://discord.com/invite/Dh43CKSAdc).
+Join us on [Discord](https://discord.com/invite/Dh43CKSAdc)!

docs/source/index.rst

@@ -32,6 +32,7 @@ Welcome to the ExecuTorch Documentation
 
 The ExecuTorch source is hosted on GitHub at
 https://github.com/pytorch/executorch. 
+
 Join us on `Discord <https://discord.com/invite/Dh43CKSAdc>`__ if you have questions
 about ExecuTorch or would like to become a contributor!