docs: fix RST format

Author: kenjis

user_guide_src/source/installation/installing_composer.rst

@@ -182,9 +182,9 @@ In your project root:
 .. important:: When you deploy to your production server, don't forget to run the
     following command:
 
-.. code-block:: console
+    .. code-block:: console
 
-    composer install --no-dev
+        composer install --no-dev
 
     The above command will remove the Composer packages only for development
     that are not needed in the production environment. This will greatly reduce