fix: set default locale for lang attribute

Jacky Zhao

2024-02-08 a87704cd05e379c670abce823385fb937a65920d

 quartz/components/styles/footer.scss

@@ -1,6 +1,7 @@
footer {
  text-align: left;
  margin-bottom: 4rem;
  opacity: 0.7;

  & ul {
    list-style: none;