Update openapi about message pack

Signed-off-by: Kunlin Yu <yukunlin@syriusrobotics.com>

Author: kunlinyu

deploy/var/www/dbus2http/schema/dbus2http_openapi.yaml

@@ -139,11 +139,14 @@ paths:
               $ref: '#/components/schemas/MethodCall'
       responses:
         "200":
-          description: Method return value serialized as JSON
+          description: Method return value serialized as JSON or MessagePack
           content:
             application/json:
               schema:
                 $ref: '#/components/schemas/MethodReply'
+            application/x-msgpack:
+              schema:
+                $ref: '#/components/schemas/MethodReply'
         "400":
           $ref: '#/components/responses/BadRequest'
         "500":