refactor: move nginx:help to internal-functions

plugins/nginx-vhosts/commands

@@ -1,21 +1,15 @@
 #!/usr/bin/env bash
 [[ " help nginx:help " == *" $1 "* ]] || exit "$DOKKU_NOT_IMPLEMENTED_EXIT"
+source "$PLUGIN_AVAILABLE_PATH/nginx-vhosts/internal-functions"
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
-source "$PLUGIN_AVAILABLE_PATH/nginx-vhosts/functions"
 
 case "$1" in
   help | nginx:help)
-    
-
-    if [[ $1 = "nginx:help" ]] ; then
-        help_formatted
-    else
-        help_content_func
-    fi
-  ;;
+    nginx_vhosts_help_cmd "$@"
+    ;;
 
   *)
     exit "$DOKKU_NOT_IMPLEMENTED_EXIT"
-  ;;
+    ;;
 
 esac