Update cheat-sheet.md

cheat-sheet.md

@@ -8,7 +8,7 @@ To avoid entering username and password everytime you pull/push to a git reposit
   # This is Git's per-user configuration file.
   [user]
         name = vihari
-        email = viharipiratla@gmail.com
+        email = vxxxxxxxxx@gmail.com
   [credential]
         helper = osxkeychain
   ```