docs: switch to fenced codeblocks (#31806)

site/content/docs/5.0/components/collapse.md

@@ -149,12 +149,12 @@ To add accordion-like group management to a collapsible area, add the data attri
 
 Enable manually with:
 
-{{< highlight js >}}
+```js
 var collapseElementList = [].slice.call(document.querySelectorAll('.collapse'))
 var collapseList = collapseElementList.map(function (collapseEl) {
   return new bootstrap.Collapse(collapseEl)
 })
-{{< /highlight >}}
+```
 
 ### Options
 
@@ -195,12 +195,12 @@ Activates your content as a collapsible element. Accepts an optional options `ob
 
 You can create a collapse instance with the constructor, for example:
 
-{{< highlight js >}}
+```js
 var myCollapse = document.getElementById('myCollapse')
 var bsCollapse = new bootstrap.Collapse(myCollapse, {
   toggle: false
 })
-{{< /highlight >}}
+```
 
 <table class="table">
   <thead>
@@ -264,9 +264,9 @@ Bootstrap's collapse class exposes a few events for hooking into collapse functi
   </tbody>
 </table>
 
-{{< highlight js >}}
+```js
 var myCollapsible = document.getElementById('myCollapsible')
 myCollapsible.addEventListener('hidden.bs.collapse', function () {
   // do something...
 })
-{{< /highlight >}}
+```