Add information_for_contributors to grammars

extensions/diff/syntaxes/diff.tmLanguage.json

@@ -1,4 +1,9 @@
 {
+	"information_for_contributors": [
+		"This file has been converted from https://github.com/textmate/diff.tmbundle/blob/master/Syntaxes/Diff.plist",
+		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
+		"Once accepted there, we are happy to receive an update request."
+	],
 	"fileTypes": [
 		"patch",
 		"diff",
@@ -158,6 +163,5 @@
 		}
 	],
 	"scopeName": "source.diff",
-	"uuid": "7E848FF4-708E-11D9-97B4-0011242E4184",
-	"version": "https://github.com/textmate/diff.tmbundle/commit/0593bb775eab1824af97ef2172fd38822abd97d7"
+	"uuid": "7E848FF4-708E-11D9-97B4-0011242E4184"
 }