utils/new_module: Ensure correct number of parameters for new_module

When testing the number parameters for new_module, the
`github_user` was not being taken into account.

utils/new_module

@@ -63,7 +63,7 @@ for (( i=0; i<OPTIND-1; i++)); do
     shift
 done
 
-if [ ${#@} -ne 3 ]; then
+if [ ${#@} -ne 4 ]; then
     usage;
     exit 1
 fi