fix(tabs): revert tab and tabs rendering (#772) and update chroma lexers

packages/chroma-lexers/src/custom-types.ts

@@ -2,6 +2,7 @@
  * Custom code types that are not in Chroma's built-in lexer definitions.
  */
 export const customCodeTypes: Record<string, string> = {
-  markdown: 'Markdown',
-  yml: 'YAML',
+  'go-html-template': 'Go HTML Template',
+  'markdown': 'Markdown',
+  'yml': 'YAML',
 }