minor #35204 [Security-Guard] fix missing name tag in param docblock (jrushlow)

This PR was merged into the 4.4 branch.

Discussion
----------

[Security-Guard] fix missing name tag in param docblock

Added missing $credentials name tag to @param for getPassword()
to resolve PHPStan error and comply with the docBlock spec.

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #35203
| License       | MIT
| Doc PR        |

Added `[name]` tag to `@param` dockBlock for `PasswordAuthenticatedInterface::getPassword()`  to comply with the docBlock "standard" and to eliminate PHPStan error's when analyzing `PasswordAuthenticatedInterface.php`

Commits
-------

555189ae2c [Security-Guard] fixed 35203 missing name tag in param docblock

src/Symfony/Component/Security/Guard/PasswordAuthenticatedInterface.php

@@ -19,7 +19,7 @@ interface PasswordAuthenticatedInterface
     /**
      * Returns the clear-text password contained in credentials if any.
      *
-     * @param mixed The user credentials
+     * @param mixed $credentials The user credentials
      */
     public function getPassword($credentials): ?string;
 }