simplify tag regex

Author: UziTech

src/Slugger.js

@@ -14,7 +14,7 @@ module.exports = class Slugger {
       .toLowerCase()
       .trim()
       // remove html tags
-      .replace(/<!?\/?[\w-]+(?: .*)?\/?>/g, '')
+      .replace(/<[!\/a-z].*?>/ig, '')
       // remove unwanted chars
       .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '')
       .replace(/\s/g, '-');