fix mermaid

exampleSite/content/markdown-syntax.md

@@ -3,8 +3,9 @@ author: "Hugo Authors"
 title: "Markdown Syntax Guide"
 date: "2021-07-18T10:52:59+08:00"
 description: "Sample article showcasing basic Markdown syntax."
-categories: ["markdown"]
-tags: ["markdown"]
+categories:
+tags:
+  - markdown
 ---
 
 This article offers a sample of basic Markdown syntax that can be used in Hugo content files, also it shows whether basic HTML elements are decorated with CSS in a Hugo theme.
@@ -100,7 +101,7 @@ Tables aren't part of the core Markdown spec, but Hugo supports supports them ou
 type Registry interface {
     Register(*Service, ...RegisterOption) error
     Deregister(*Service, ...DeregisterOption) error
-    GetService(string, ...GetOption) ([]*Service, error)
+    List(string, ...ListOption) ([]*Service, error)
 }
 ```