Link to migration guide from <svelte:component> documentation (#14737)

Author: joakim

Diff for: documentation/docs/99-legacy/30-legacy-svelte-component.md

@@ -2,7 +2,7 @@
 title: <svelte:component>
 ---
 
-In runes mode, `<MyComponent>` will re-render if the value of `MyComponent` changes.
+In runes mode, `<MyComponent>` will re-render if the value of `MyComponent` changes. See the [Svelte 5 migration guide](/docs/svelte/v5-migration-guide#Breaking-changes-in-runes-mode-svelte:component-is-no-longer-necessary) for an example.
 
 In legacy mode, it won't — we must use `<svelte:component>`, which destroys and recreates the component instance when the value of its `this` expression changes: