Fix typo 'emails addresses'

Signed-off-by: Zia Sobhani <sobhani@plexim.com>

Documentation/git-filter-repo.txt

@@ -267,7 +267,7 @@ Generic callback code snippets
 	Python code body for processing names of people; see <<CALLBACKS>>.
 
 --email-callback <function_body>::
-	Python code body for processing emails addresses; see
+	Python code body for processing email addresses; see
 	<<CALLBACKS>>.
 
 --refname-callback <function_body>::

git-filter-repo

@@ -1933,7 +1933,7 @@ EXAMPLES
         help=_("Python code body for processing names of people; see "
                "CALLBACKS section below."))
     callback.add_argument('--email-callback', metavar="FUNCTION_BODY_OR_FILE",
-        help=_("Python code body for processing emails addresses; see "
+        help=_("Python code body for processing email addresses; see "
                "CALLBACKS section below."))
     callback.add_argument('--refname-callback', metavar="FUNCTION_BODY_OR_FILE",
         help=_("Python code body for processing refnames; see CALLBACKS "