various path fixes for links to extensions, fix relative paths in links

Jacky Zhao

2023-08-17 0c199975f2d469ecdfd7efcf2ddd16ffa1dc492b

 quartz/components/Header.tsx

@@ -9,7 +9,7 @@
  display: flex;
  flex-direction: row;
  align-items: center;
  margin: 2em 0;
  margin: 2rem 0;
  gap: 1.5rem;
}