Fixed typo in docs/topics/signals.txt.

docs/topics/signals.txt

@@ -5,10 +5,10 @@ Signals
 .. module:: django.dispatch
    :synopsis: Signal dispatch
 
-Django includes a "signal dispatcher" which helps allow decoupled applications
-get notified when actions occur elsewhere in the framework. In a nutshell,
-signals allow certain *senders* to notify a set of *receivers* that some action
-has taken place. They're especially useful when many pieces of code may be
+Django includes a "signal dispatcher" which helps decoupled applications get
+notified when actions occur elsewhere in the framework. In a nutshell, signals
+allow certain *senders* to notify a set of *receivers* that some action has
+taken place. They're especially useful when many pieces of code may be
 interested in the same events.
 
 Django provides a :doc:`set of built-in signals </ref/signals>` that let user