chore(studio): add link to AdminstratorAccess-Amplify policy in troubleshooting (aws-amplify#5278)

Author: petercwk

src/pages/console/adminui/access-management.mdx

@@ -68,7 +68,7 @@ To provide a passwordless login experience from AWS Amplify Console to Amplify S
 - *amplify-login-define-auth-challenge-SHORT_CODE*
 - *amplify-login-verify-auth-challenge-SHORT_CODE*
 
-### Troubleshooting
+## Troubleshooting
 If your Studio application experiences any issues logging in or the resources have been deleted, you can re-create the resources by disabling and then re-enabling Studio for your Amplify Project on the Amplify management console.
 
 1. Sign in to the AWS Management Console and open AWS Amplify.
@@ -79,4 +79,9 @@ If your Studio application experiences any issues logging in or the resources ha
 
 <Callout warning>
    Disabling and re-enabling Amplify Studio will remove and recreate the Amplify Studio managed User pool resource used to access your project, and you will need to re-invite your users to provide access to your Amplify Project. Disabling and re-enabling Amplify Studio will not modify any resources on your Amplify Project.
-</Callout>
+</Callout>
+
+### I am not authorized to perform an action in Amplify
+If you receive an error that you're not authorized to perform an action, your policies must be updated to allow you to perform the action.
+
+If you need help, contact your AWS administrator. Your administrator is the person who provided you with your sign-in credentials. See [AWS managed policies for AWS Amplify](https://docs.aws.amazon.com/amplify/latest/userguide/security-iam-awsmanpol.html) for more details.