fix: 修復開啟anchor後,瀏覽器上一頁/下一頁 跳轉會404的bug (文章頁的url hash 在pjax下變成 undefined)

fix: 修復開啟anchor後，文章頁跳轉回主頁，主頁網址的hash添加上文章頁最後一個標題的 bug
improvement: 優化 button tags 標簽外掛

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hexo-theme-butterfly",
-  "version": "3.7.5-b3",
+  "version": "3.7.5-b4",
   "description": "A Simple and Card UI Design theme for Hexo",
   "main": "package.json",
   "scripts": {