Fix error path in changedisplayname call

settings/ajax/changedisplayname.php

@@ -29,5 +29,5 @@ if( OC_User::setDisplayName( $username, $displayName )) {
 	OC_JSON::success(array("data" => array( "username" => $username, 'displayName' => $displayName )));
 }
 else{
-	OC_JSON::error(array("data" => array( "message" => $l->t("Unable to change display name"), displayName => OC_User::getDisplayName($username) )));
-}
\ No newline at end of file
+	OC_JSON::error(array("data" => array( "message" => $l->t("Unable to change display name"), 'displayName' => OC_User::getDisplayName($username) )));
+}