Update README.rst

Author: branberry

README.rst

@@ -1,8 +1,8 @@
 ===============================
 MongoDB C# Driver Documentation
-===============================
+=============================== 
 
-This repository contains documentation for the MongoDB C# Driver.
+This repository contains documentation for the MongoDB C# Driver. Test preview
 
 
 File JIRA Tickets
@@ -21,4 +21,4 @@ The MongoDB Documentation Project is governed by the terms of the
 `MongoDB Contributor Agreement
 <https://www.mongodb.com/legal/contributor-agreement>`_.
 
--- The MongoDB Docs Team
+-- The MongoDB Docs Team