fix: check content-type before applying spa patch (closes #597)

Jacky Zhao

2023-11-17 3f0be7fbe470500a57c457ad1d1c039175330697

 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;
}