Update header link w anchor

Author: ConnorLand

content/en/docs/appstore/use-content/platform-supported-content/services/oidc-provider.md

@@ -44,7 +44,7 @@ The Mendix Marketplace offers the Single Sign-On (SSO) module, which enables you
 
 You can build a Mendix application that acts as a SSO Broker by using the OIDC SSO and the OIDC Provider modules. The OIDC SSO module authenticates end-users at your central IdP, while the OIDC Provider module enables your new app to act as an IdP (OpenID Provider) for your other Mendix applications. This means it is working as an SSO broker, catering for authentication and, optionally, for authorization. 
 
-For more information on the concepts behind authorization, see the [About Authorization](#about-authorization) section below.
+For more information on the concepts behind authorization, see [Authorization](#authorization) below.
 
 Your deployment pipeline (deployment agent) will be responsible for registering additional Mendix apps with the SSO broker. This process can be automated using client registration API provided by the OIDC Provider module.