docs: fix dead link to houdini.how (#19381)

Author: patak-cat

docs/guide/assets.md

@@ -46,7 +46,7 @@ document.getElementById('hero-img').style.background = `url("${imgUrl}")`
 
 ### Explicit URL Imports
 
-Assets that are not included in the internal list or in `assetsInclude`, can be explicitly imported as a URL using the `?url` suffix. This is useful, for example, to import [Houdini Paint Worklets](https://houdini.how/usage).
+Assets that are not included in the internal list or in `assetsInclude`, can be explicitly imported as a URL using the `?url` suffix. This is useful, for example, to import [Houdini Paint Worklets](https://developer.mozilla.org/en-US/docs/Web/API/CSS/paintWorklet_static).
 
 ```js twoslash
 import 'vite/client'