minor #35080 [Notifier] Add phpdoc types to supported schemes method …

…(Philippe Segatori)

This PR was submitted for the master branch but it was merged into the 5.0 branch instead.

Discussion
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[Notifier] Add phpdoc types to supported schemes method

| Q             | A
| ------------- | ---
| Branch?       |  5.0
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | <!-- prefix each issue number with "Fix #", if any -->
| License       | MIT
| Doc PR        |  <!-- required for new features -->

Commits
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9bf46f8 Add supported schemes doc blocks type

src/Symfony/Component/Notifier/Exception/UnsupportedSchemeException.php

@@ -40,6 +40,9 @@ class UnsupportedSchemeException extends LogicException
         ],
     ];
 
+    /**
+     * @param string[] $supported
+     */
     public function __construct(Dsn $dsn, string $name = null, array $supported = [])
     {
         $provider = $dsn->getScheme();

src/Symfony/Component/Notifier/Transport/AbstractTransportFactory.php

@@ -39,6 +39,9 @@ public function supports(Dsn $dsn): bool
         return \in_array($dsn->getScheme(), $this->getSupportedSchemes());
     }
 
+    /**
+     * @return string[]
+     */
     abstract protected function getSupportedSchemes(): array;
 
     protected function getUser(Dsn $dsn): string