[BUGFIX] Broken rendering in docs

Add necessary blank line.
The indentation will be rendered as quote otherwise.

Documentation/Environment.rst

@@ -68,6 +68,7 @@ After that you can start the testing distribution using ddev.
     ddev db-import
 
 After that you should be able to access the frontend:
+
 .. code-block:: bash
 
     ddev launch