add author, update URL

extension.json

@@ -1,8 +1,11 @@
 {
 	"name": "SimpleMathJax",
 	"version": "0.8.2",
-	"author": "jmnote",
-	"url": "https://www.mediawiki.org/wiki/Extension:SimpleMathJax",
+	"author": [
+		"jmnote",
+		"Qiuwen Baike Contributors"
+	],
+	"url": "https://git.qiuwen.wiki/qiuwen/SimpleMathJax",
 	"description": "render TeX between <code><nowiki><math></nowiki></code> and <code><nowiki></math></nowiki></code>",
 	"license-name": "GPL-2.0+",
 	"type": "parserhook",