docs: add docs for enabling table of content

exampleSite/content/posts/table-of-content/index.md

@@ -0,0 +1,26 @@
+---
+title: How to enable table of content
+date: 2023-05-02
+description: Setup table of content in Hugo blog awesome theme
+---
+
+## Table of content
+
+This theme supports displaying table of content in blog posts.
+
+To enable it, globally set `toc` to `true` in `config.toml`:
+
+```toml
+[params]
+  toc = true
+```
+
+This will enable table of content for all posts. If you want to enable it for a specific post, add `toc = true` to the front matter of the post:
+
+```yaml
+---
+title: How to enable table of content
+date: 2023-05-02
+toc: true
+---
+```