Clarify role naming requirement for OIDC connector

Added important note about role naming for OIDC connector.

Author: jlheard

articles/sentinel/connect-aws-configure-environment.md

@@ -80,6 +80,9 @@ Follow these instructions in the AWS documentation:<br>[Creating OpenID Connect
 
 ### 3. Create an AWS assumed role
 
+   > [!IMPORTANT]
+   > The name must include the exact prefix `OIDC_`; otherwise, the connector can't function properly.
+
 1. Follow these instructions in the AWS documentation:<br>[Creating a role for web identity or OpenID Connect Federation](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-idp_oidc.html#idp_oidc_Create). 
 
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