[#3072] Syntax tweaks thanks to @xabbuh

Author: weaverryan

cookbook/service_container/scopes.rst

@@ -210,9 +210,9 @@ your code. This should also be taken into account when declaring your service:
                 ->setSynchronized(true);
 
 .. caution::
-   
-   The service using the synchronized service will need to be public in order have its
-   setter called when the scope changes.
+
+    The service using the synchronized service will need to be public in order
+    have its setter called when the scope changes.
 
 .. _changing-service-scope: