chore(docs): update readme feedback header section (#81)

Author: sdarshale

README.md

@@ -56,7 +56,7 @@ PayPal codespaces require a client ID and client secret for your app.
 
 You can read more about codespaces in the [PayPal Developer Docs](https://developer.paypal.com/api/rest/sandbox/codespaces).
 
-## Submit Feedback 
+### Feedback
 
 * To report a bug or suggest a new feature, create an [issue in GitHub](https://github.com/paypal-examples/paypaldevsupport/issues/new/choose). 
 * To submit feedback, go to [GitHub Codespaces](https://developer.paypal.com/api/rest/sandbox/codespaces) and select the "Feedback" tab.