add git fetch to migration instructions

Jacky Zhao

2023-08-20 90d6c1ed24283d0b046ba7eee2e6533a73cf3683

 quartz/components/styles/legacyToc.scss

@@ -12,7 +12,7 @@
      margin: 0;
    }
  }
    

  & ul {
    list-style: none;
    margin: 0.5rem 1.25rem;