contributing: Small tidy up in gitlab.rst

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

contributing/gitlab.rst

@@ -29,7 +29,7 @@ Clone your fork locally, enter its directory and set:
 .. code-block:: bash
 
     $ git config --local user.email <your_eclipse_account_email>
-    $ git config --local user.name <your_eclipse_full_name>  
+    $ git config --local user.name <your_eclipse_full_name>
 
 
 To push and pull over HTTPS with Git using your account, you must set a password