Add information_for_contributors to grammars

extensions/python/syntaxes/MagicRegExp.tmLanguage.json

@@ -1,4 +1,9 @@
 {
+	"information_for_contributors": [
+		"This file has been converted from https://github.com/MagicStack/MagicPython/blob/master/grammars/MagicRegExp.tmLanguage",
+		"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."
+	],
 	"name": "MagicRegExp",
 	"scopeName": "source.regexp.python",
 	"fileTypes": [
@@ -460,6 +465,5 @@
 				}
 			]
 		}
-	},
-	"version": "https://github.com/MagicStack/MagicPython/commit/df5bb18c64252f2e7b1aa87e2ed124666d314f1d"
+	}
 }