✏️ Docs: rename mermaid post

exampleSite/content/posts/extended-shortcode-mermaid/index.en.md

@@ -1,5 +1,5 @@
 ---
-title: "Theme Documentation - mermaid Shortcode"
+title: "Extended Shortcode - mermaid"
 date: 2022-07-09T17:20:15+08:00
 draft: false
 author: "Lruihao"

exampleSite/content/posts/extended-shortcode-mermaid/index.zh-cn.md

@@ -1,5 +1,5 @@
 ---
-title: "主题文档 - mermaid Shortcode"
+title: "扩展 Shortcode - mermaid"
 date: 2022-07-09T17:20:15+08:00
 draft: false
 author: "Lruihao"

exampleSite/content/posts/theme-documentation-extended-shortcodes/index.en.md

@@ -323,7 +323,7 @@ A **tip** banner
 
 The `mermaid` shortcode supports diagrams in Hugo with [Mermaid](https://mermaidjs.github.io/) library.
 
-The full documentation is provided in [Theme Documentation - mermaid Shortcode](../theme-documentation-mermaid-shortcode).
+The full documentation is provided in [Extended Shortcode - mermaid](../extended-shortcode-mermaid/).
 
 ## 6 echarts
 

exampleSite/content/posts/theme-documentation-extended-shortcodes/index.zh-cn.md

@@ -325,7 +325,7 @@ This is a **right-aligned** paragraph.
 
 `mermaid` shortcode 使用 [Mermaid](https://mermaidjs.github.io/) 库提供绘制图表和流程图的功能.
 
-完整文档请查看页面 [主题文档 - mermaid Shortcode](../theme-documentation-mermaid-shortcode).
+完整文档请查看页面 [扩展 Shortcode - mermaid](../extended-shortcode-mermaid/).
 
 ## 6 echarts