Update authorization-rules.mdx

Author: renebrandel

src/pages/cli/graphql/authorization-rules.mdx

@@ -210,7 +210,7 @@ With dynamic group authorization, each record contains an attribute specifying w
 
 By default, `group` authorization leverages Amazon Cognito user pool groups but you can also use OpenID Connect with `group` authorization. See [OpenID Connect as an authorization provider](#using-oidc-authorization-provider).
 
-**Known real-time subscription limitation for dynamic group authorization**:
+**Known limitations for real-time subscriptions when using dynamic group authorization**:
 1. If you authorize based on a single group per record, then subscriptions are only supported if the user is part of 5 or fewer user groups
 2. If you authorize via an array of groups (communities: [String]! example above),
   - subscriptions are only supported if the user is part of 20 or fewer groups