feat: fix katex and mermaid diagrams

README.md

@@ -4,15 +4,15 @@ This template should help get you started developing with Vue 3 in Vite.
 
 ## TODO
 
-- [ ] render code highlight
-- [ ] render mathjax
-- [ ] render plantuml
-- [ ] custom css in sub repo
+- [x] render code highlight
+- [x] render ~~mathjax~~ katex
+- [x] render ~~plantuml~~ mermaid
+- [x] custom css in sub repo
 - [ ] custom layout in sub repo ?
 - [ ] build RSS feed
-- [ ] link to home
+- [x] link to home
 - [ ] link to previous/next article
-- [ ] set page title
+- [x] set page title
 
 ## Recommended IDE Setup