fix: syntax error in changelog (#11869)

.changeset/new-monkeys-sit.md

@@ -2,11 +2,11 @@
 'astro': minor
 ---
 
-Adds a new object `swapFunctions` to expose the necessary utility functions on `astro:transitions/client` that allow you to build custom swap functions to be used with view transitions. 
+Adds a new object `swapFunctions` to expose the necessary utility functions on `astro:transitions/client` that allow you to build custom swap functions to be used with view transitions.
 
 The example below uses these functions to replace Astro's built-in default `swap` function with one that only swaps the `<main>` part of the page:
 
-```astro
+```html
 <script>
 import { swapFunctions } from 'astro:transitions/client';
 
@@ -26,7 +26,7 @@ function swapMainOnly(doc: Document) {
   }
   restoreFocusFunction();
 };
-<script>
+</script>
 ```
 
 See the [view transitions guide](https://docs.astro.build/en/guides/view-transitions/#astrobefore-swap) for more information about hooking into the `astro:before-swap` lifecycle event and adding a custom swap implementation.