add commitHash to cgmanifest

extensions/xml/cgmanifest.json

@@ -6,12 +6,13 @@
 				"git": {
 					"name": "atom/language-xml",
 					"repositoryUrl": "https://github.com/atom/language-xml",
-					"commitHash": ""
+					"commitHash": "7bc75dfe779ad5b35d9bf4013d9181864358cb49"
 				}
 			},
 			"license": "MIT",
+			"description": "The files syntaxes/xml.json and syntaxes/xsl.json were derived from the Atom package https://github.com/atom/language-xml which were originally converted from the TextMate bundle https://github.com/textmate/xml.tmbundle.",
 			"version": "0.0.0"
 		}
 	],
 	"version": 1
-}
+}