[UPD] update docs

docs/contributing.rst

@@ -79,7 +79,7 @@ If you have any troubles with the setup, please refer to the `installation guide
 
     $ git checkout -b name-of-your-bugfix-or-feature
 
-    Now you can make your changes locally.
+   Now you can make your changes locally.
 
 6. When you're done making changes, check that your changes pass the tests.