Update node-run.md

Author: inventionpro

docs/mura/node-run.md

@@ -33,8 +33,8 @@ cd Mura
 
 Once the frontend folder is there you just need to run this:
 ```bash
-npm i express open
+npm i express open cors
 node quickrun.js
 ```
 
-This will automatically open the browser on localhost with the frontend running.
+This will automatically open the browser on localhost with the frontend running.