docs: add self-hosting section (#883)

kon-foo

2024-02-19 3e09b05468c372e85518ff76d8d6d9a415f61fac

 quartz/styles/callouts.scss

@@ -157,6 +157,6 @@
  }

  .callout-title-inner {
    font-weight: $boldWeight;
    font-weight: $semiBoldWeight;
  }
}