fix typo to call post change hook

deploy_app.sh

@@ -249,7 +249,7 @@ function deploy(){
     test $isupdate -eq 0 || run_task "${profiledir}/tasks_postinstall.sh"
     grep . $cfgdiff
     if [ $? -eq 0 ]; then
-        run_task "${profiledir}/tasks_postchanges.sh"
+        run_task "${profiledir}/tasks_postchange.sh"
     else
         echo SKIP: No config file was changed.
     fi