Update article reference

Author: NReppekus

articles/ai-services/speech-service/includes/cognitive-services-speech-service-rest-auth.md

@@ -21,7 +21,7 @@ When you're using the `Ocp-Apim-Subscription-Key` header, only your resource key
 
 When you're using the `Authorization: Bearer` header, you need to make a request to the `issueToken` endpoint. In this request, you exchange your resource key for an access token that's valid for 10 minutes.
 
-Another option is to use Microsoft Entra authentication that also uses the `Authorization: Bearer` header, but with a token issued via Microsoft Entra ID. See [Use Microsoft Entra authentication](#Use-Microsoft-Entra-authentication).
+Another option is to use Microsoft Entra authentication that also uses the `Authorization: Bearer` header, but with a token issued via Microsoft Entra ID. See [Use Microsoft Entra authentication](#use-microsoft-entra-authentication).
 
 ### How to get an access token