minor #20458 FIX : Early Hint 103 - fix a problem to load "Style" (arnolem)

This PR was submitted for the 7.2 branch but it was merged into the 6.4 branch instead.

Discussion
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FIX : Early Hint 103 - fix a problem to load "Style"

fix a problem to load "Style" (see : https://frankenphp.dev/docs/early-hints/)

Commits
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b16b567 Update controller.rst

Author: javiereguiluz

controller.rst

@@ -798,7 +798,7 @@ method::
         {
             $response = $this->sendEarlyHints([
                 new Link(rel: 'preconnect', href: 'https://fonts.google.com'),
-                (new Link(href: '/style.css'))->withAttribute('as', 'stylesheet'),
+                (new Link(href: '/style.css'))->withAttribute('as', 'style'),
                 (new Link(href: '/script.js'))->withAttribute('as', 'script'),
             ]);