do not automatically format json (#13320)

.vscode/settings.json

@@ -23,5 +23,8 @@
         "editor.trimAutoWhitespace": false,
         "files.trimTrailingWhitespace": false
     },
-    "python.formatting.provider": "yapf"
+    "python.formatting.provider": "yapf",
+    "[json]": {
+	    "editor.formatOnSave": false
+    }
 }