[admin-guide-cloud] Add a bit space before code-block

Numbering is violated at present due to wrong position of
code-block. So it is corrected

Change-Id: I509dae382e996a9832e689172daa7c11f1aee07f

doc/admin-guide-cloud/source/dashboard_sessions.rst

@@ -129,7 +129,7 @@ far beyond the scope of this documentation.
 
 #. In the ``local_settings.py`` file, change these options:
 
-  .. code-block:: python
+   .. code-block:: python
 
       SESSION_ENGINE = 'django.contrib.sessions.backends.db'
       DATABASES = {