fix: wrong auth header for streaming

Author: m-ods

asyncapi.yml

@@ -652,7 +652,7 @@ components:
       description: Authenticate using your AssemblyAI API key
       type: httpApiKey
       in: header
-      name: Authorization
+      name: Authentication
     Token:
       description: "Authenticate using a [generated temporary token](https://www.assemblyai.com/docs/speech-to-text/streaming#authenticate-with-a-temporary-token)"
       type: httpApiKey