Add code toggle to menus page (#1568)

Closes #1299

content/en/content-management/menus.md

@@ -12,7 +12,7 @@ menu:
   docs:
     parent: "content-management"
     weight: 120
-weight: 120	#rem
+weight: 120
 aliases: [/extras/menus/]
 toc: true
 ---
@@ -48,31 +48,24 @@ If all you need to do is add an entry to a menu, the simple form works well.
 
 #### A Single Menu
 
-```
+{{< code-toggle >}}
----
 menu: "main"
----
+{{< /code-toggle >}}
-```
 
 #### Multiple Menus
 
-```
+{{< code-toggle >}}
----
 menu: ["main", "footer"]
----
+{{< /code-toggle >}}
-```
 
 #### Advanced
 
-
+{{< code-toggle >}}
-```
----
 menu:
   docs:
     parent: 'extras'
     weight: 20
----
+{{< /code-toggle >}}
-```
 
 ## Add Non-content Entries to a Menu
 
@@ -130,7 +123,6 @@ A common use case is to define a custom param to add a css class to a specific m
       class = "highlight-menu-item"
 {{</ code-toggle >}}
 
-
 ## Render Menus
 
 See [Menu Templates](/templates/menu-templates/) for information on how to render your site menus within your templates.