revert heading change

Author: paigecalvert

docs/vendor/enterprise-portal-use.mdx

@@ -42,7 +42,7 @@ To sign up for a self-service account and log in to the Enteprise Portal:
 
 1. Go to your email account and open the automated account creation email. Follow the link provided in the email to log in.    
 
-## View Application Instructions
+## View Install and Update Instructions
 
 This section describes how to view install and update instructions in the Enterprise Portal.