Update index.md (#19627)

Added clarification as to what needs to go in to the mount.

guide/english/certifications/apis-and-microservices/basic-node-and-express/use-body-parser-to-parse-post-requests/index.md

@@ -12,6 +12,10 @@ The body-parser should already be added to your project if you used the provided
     ...
 ```
 
-You need to do for this challenge is pass the middleware to app.use(). Make sure it comes before the paths it needs to be used on.
+All you need to do for this challenge is pass the middleware to app.use(). Make sure it comes before the paths it needs to be used on. Remember that body-parser returns with `bodyParser.urlencoded({extended: false})`. Use the following as a template:
+
+```javascript
+app.use(middleware-function);
+```
 
 <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/certifications/apis-and-microservices/basic-node-and-express/use-body-parser-to-parse-post-requests/index.md' target='_blank' rel='nofollow'>Help our community expand these hints and guides</a>.