update Docusaurus on Workers with Assets guide now that it no longer experimental (#20521)

Author: petebacondarwin

src/content/docs/workers/frameworks/framework-guides/docusaurus.mdx

@@ -24,7 +24,7 @@ To use `create-cloudflare` to create a new Docusaurus project with <InlineBadge
 <PackageManagers
 	type="create"
 	pkg="cloudflare@latest my-docusaurus-app"
-	args={"--framework=docusaurus --experimental"}
+	args={"--framework=docusaurus --platform=workers"}
 />
 
 <Render