docs: enchance pages navigation

exampleSite/content/docs/guide/shortcodes/_index.md

@@ -1,6 +1,8 @@
 ---
 title: Shortcodes
 weight: 9
+prev: /docs/guide/diagrams
+next: /docs/guide/shortcodes/callout
 ---
 
 [Hugo Shortcodes](https://gohugo.io/content-management/shortcodes/) are simple snippets inside your content files calling built-in or custom templates.
@@ -9,7 +11,7 @@ Hextra provides a collection of beautiful shortcodes to enhance your content.
 
 
 {{< cards >}}
-  {{< card link="callouts" title="Callouts" icon="warning" >}}
+  {{< card link="callout" title="Callout" icon="warning" >}}
   {{< card link="cards" title="Cards" icon="card" >}}
   {{< card link="filetree" title="FileTree" icon="folder-tree" >}}
   {{< card link="icon" title="Icon" icon="badge-check" >}}

exampleSite/content/docs/guide/shortcodes/callout.md

@@ -1,10 +1,15 @@
 ---
 title: Callout Component
 linkTitle: Callout
+aliases:
+- callouts
+prev: /docs/guide/shortcodes
 ---
 
 A built-in component to show important information to the reader.
 
+<!--more-->
+
 ## Example
 
 {{< callout emoji="👾">}}

exampleSite/content/docs/guide/shortcodes/tabs.md

@@ -1,5 +1,6 @@
 ---
 title: Tabs
+next: /docs/advanced/
 ---
 
 ## Example