chore: add *.html to lint-staged to match CI prettier check

Closes the gap between the pre-commit hook and CI's prettier --check .

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: celias

package.json

@@ -57,6 +57,9 @@
     ],
     "*.{js,jsx,json,md}": [
       "prettier --write"
+    ],
+    "*.html": [
+      "prettier --write"
     ]
   }
 }