Update xmpp.rst

Spelling change

source/applications_optional/xmpp.rst

@@ -9,7 +9,7 @@ XMPP Manager
 
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-| XMPP Manager is an optional menu item.  In order to have the option for XMPP Manager there are a few step to take to enble XMPP.
+| XMPP Manager is an optional menu item.  In order to have the option for XMPP Manager, there are a few steps you need to take to enable it.
 
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