Fix links in the tutorial

Summary:
> as per title

> few minor changes

(Note: this ignores all push blocking failures!)

Reviewed By: jacobkahn

Differential Revision: D13547848

fbshipit-source-id: 8213474a1d4529cda29d944eee84dcbb251f5cf7

Author: vineelpratap

README.md

@@ -9,7 +9,7 @@ for maximum efficiency and scale.
 All the documentation (including installation instructions) can be found
 [here](https://fl.readthedocs.io/en/latest/)
 
-* Contact: [email protected], [email protected], [email protected],
+Contact: [email protected], [email protected], [email protected],
   [email protected], [email protected],  [email protected], [email protected], [email protected]
 
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