Update heading font to Maple Mono

Author: shock59

assets/styles.css

@@ -1,3 +1,12 @@
+/* maple-mono-latin-400-normal */
+@font-face {
+  font-family: "Maple Mono";
+  font-style: normal;
+  font-display: swap;
+  font-weight: 400;
+  src: url(https://cdn.jsdelivr.net/fontsource/fonts/maple-mono@latest/latin-400-normal.woff2) format("woff2"), url(https://cdn.jsdelivr.net/fontsource/fonts/maple-mono@latest/latin-400-normal.woff) format("woff");
+}
+
 body {
   margin: 0 auto;
 
@@ -14,7 +23,7 @@ body {
 
 h1,
 h2 {
-  font-family: "Fantasque Sans Mono", sans-serif;
+  font-family: "Maple Mono", sans-serif;
 }
 
 h1 {