fix: add syntax highlighting

Author: 2color

assets/js/highlight.js

@@ -10,6 +10,7 @@ import markdown from 'highlight.js/lib/languages/markdown';
 import python from 'highlight.js/lib/languages/python';
 import go from 'highlight.js/lib/languages/go';
 import rust from 'highlight.js/lib/languages/rust';
+import diff from 'highlight.js/lib/languages/diff';
 
 hljs.registerLanguage('javascript', javascript);
 hljs.registerLanguage('json', json);
@@ -22,6 +23,7 @@ hljs.registerLanguage('md', markdown);
 hljs.registerLanguage('python', python);
 hljs.registerLanguage('go', go);
 hljs.registerLanguage('rust', rust);
+hljs.registerLanguage('diff', diff);
 
 document.addEventListener('DOMContentLoaded', () => {
   document.querySelectorAll('pre code:not(.language-mermaid)').forEach((block) => {

assets/scss/app.scss

@@ -8,7 +8,7 @@
 @import "bootstrap/scss/bootstrap";
 
 /** Import highlight.js */
-// @import "highlight.js/scss/github-dark-dimmed";
+@import "highlight.js/scss/github";
 
 /** Import KaTeX */
 @import "katex/dist/katex";