Add missing newlines around fenced codeblocks (#34630)

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

@@ -196,6 +196,7 @@ var alerts =  [].slice.call(alertList).map(function (element) {
   return new bootstrap.Alert(element)
 })
 ```
+
 {{< callout info >}}
 For the sole purpose of dismissing an alert, it isn't necessary to initialize the component manually via the JS API. By making use of `data-bs-dismiss="alert"`, the component will be initialized automatically and properly dismissed.
 

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

@@ -838,6 +838,7 @@ Activate a modal without writing JavaScript. Set `data-bs-toggle="modal"` on a c
 ```html
 <button type="button" data-bs-toggle="modal" data-bs-target="#myModal">Launch modal</button>
 ```
+
 #### Dismiss
 
 {{% js-dismiss "modal" %}}