update Java samples

Author: wing328

samples/client/petstore/java/okhttp-gson/api/openapi.yaml

@@ -3036,11 +3036,11 @@ components:
       additionalProperties: false
       description: Success response containing a map of objects with nullable fields
       example:
+        status: status
         positions:
           key:
             before: before
             after: after
-        status: status
       properties:
         status:
           type: string