Update docs in media_repository

synapse/media/v1/media_repository.py

@@ -39,9 +39,9 @@ class MediaRepositoryResource(Resource):
         <= HTTP/1.1 200 OK
            Content-Type: application/json
 
-           { "token": <media-id> }
+           { "content-uri": "mxc://<server-name>/<media-id>" }
 
-        => GET /_matrix/media/v1/download/<server_name>/<media-id> HTTP/1.1
+        => GET /_matrix/media/v1/download/<server-name>/<media-id> HTTP/1.1
 
         <= HTTP/1.1 200 OK
            Content-Type: <media-type>