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

Jacky Zhao

2023-11-17 3f0be7fbe470500a57c457ad1d1c039175330697

 docs/features/OxHugo compatibility.md

@@ -32,6 +32,7 @@
  - `replaceFigureWithMdImg`: Whether to replace `<figure/>` with `![]()`
- Formatting
  - `removeHugoShortcode`: Whether to remove hugo shortcode syntax (`{{}}`)
  - `replaceOrgLatex`: Whether to replace org-mode formatting for latex fragments with what `Plugin.Latex` supports.

> [!warning]
>