Update xhr-schema.json

Author: vip-git

src/demo/examples/simple/xhr-schema.json

@@ -17,7 +17,7 @@
     },
     "onsubmit": {
       "xhr:datasource": {
-        "url": "https://60154dbe55dfbd00174ca231.mockapi.io/api/2",
+        "url": "https://60154dbe55dfbd00174ca231.mockapi.io/post/1",
         "method": "PUT",
         "headers": {},
         "map:payload": {