Fix unquoted members in adventure map JSON

[atifaziz]

This PR fixes unquoted members in AdventureMap.json that's part of the Adventure sample:

orleans/Samples/2.0/Adventure/AdventureSetup/AdventureMap.json

Lines 13 to 16 in cbae60b

	{ "id" : 0, "name" : "brass key", "article": "a", category: "key", "foundIn" : 2, "commands" : ["lock","unlock"]},
	{ "id" : 1, "name" : "knife", "article": "a", category: "weapon", "foundIn" : 3, "commands" : ["kill"]},
	{ "id" : 2, "name" : "sandwich", "article": "a", category: "food", "foundIn" : 4, "commands" : ["eat"]},
	{ "id" : 3, "name" : "glass of water", "article": "a", category: "beverage", "foundIn" : 4, "commands" : ["drink"]}

[sergeybykov]

Thank you, @atifaziz!