Update custom.html

Author: zyaocoder

_includes/head/custom.html

@@ -24,9 +24,15 @@
 <meta name="theme-color" content="#ffffff">
 <link rel="stylesheet" href="{{ base_path }}/assets/css/academicons.css"/>
 
-
-<!-- Support for MatJax -->
-<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
-<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+<script type="text/x-mathjax-config"> MathJax.Hub.Config({ TeX: { equationNumbers: { autoNumber: "all" } } }); </script>
+<script type="text/x-mathjax-config">
+  MathJax.Hub.Config({
+    tex2jax: {
+      inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+      processEscapes: true
+    }
+  });
+</script>
+<script src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.4/latest.js?config=TeX-MML-AM_CHTML' async></script>
 
 <!-- end custom head snippets -->