chore: enable MathJax

Author: giacomocavalieri

layouts/partials/reveal-hugo/body.html

@@ -0,0 +1,17 @@
+<script>
+  MathJax = {
+    tex: {
+      inlineMath: [['$', '$'], ['\\(', '\\)']]
+    },
+    "HTML-CSS": {
+      linebreaks: { automatic: true }
+    },
+    svg: {
+      fontCache: 'global',
+      linebreaks: { automatic: true },
+    }
+  };
+</script>
+
+<script type="text/javascript" id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-svg.js">
+</script>