revert and update .prettierignore

Author: baseballyama

.prettierignore

@@ -37,3 +37,7 @@ sites/svelte.dev/src/lib/generated
 .changeset
 pnpm-lock.yaml
 pnpm-workspace.yaml
+
+# Temporarily ignore this file to avoid merge conflicts.
+# see: https://github.com/sveltejs/svelte/pull/9609
+documentation/docs/05-misc/03-typescript.md

documentation/docs/05-misc/03-typescript.md

@@ -177,11 +177,9 @@ You cannot use TypeScript in your template's markup. For example, the following
 	let count = 10;
 </script>
 
-<!-- ❌ Does not work -->
-<h1>Count as string: {count as string}!</h1>
+<h1>Count as string: {count as string}!</h1> <!-- ❌ Does not work -->
 {#if count > 4}
-	<!-- ❌ Does not work -->
-	{@const countString: string = count}
+	{@const countString: string = count} <!-- ❌ Does not work -->
 	{countString}
 {/if}
 ```