JSON Merge documentation is out of date.

[ThatRozebudDude]

The Merging for JSON section of the Merging Files documentation still shows the old method for merging data into JSON files.

I believe the correct merge example should be

[
  	{"op": "replace", "path": "/data/difficulty", "value": "super_hard"},
	{"op": "replace", "path": "/data/nested/enemies/1/weapon", "value": "minigun"}
]

but I haven't actually checked if that's correct since I haven't really used JSONPatch much. I might make a PR to update the documentation if I have the time and get around to checking to make sure the thing I wrote actually works but I do not have the time to do that right now.