fixed spaces and 72 char line limit

Author: scottwarren

components/http_foundation/sessions.rst

@@ -14,10 +14,10 @@ implementation of :class:`Symfony\\Component\\HttpFoundation\\Session\\SessionIn
 
 .. caution::
 
-   Make sure your sessions aren't already initialized (which is,
-   for example, automatically done in the full-stack framework).
-   As initializing the Session object causes the session to be
-   started, which can lead to unexpected errors.
+    Make sure your sessions aren't already initialized (which is, for example,
+    automatically done in the full-stack framework). As initializing the
+    Session object causes the session to be started, which can lead to unexpected
+    errors.
 
 Quick example::