[BUGFIX] Fix namespace of `SaltedPasswordsUtility` in documentation

Resolves: #81655
Releases: master, 8.7, 7.6
Change-Id: I4fe1b16b6e4c2bdd26fd05143e7b0ead91445223
Reviewed-on: https://review.typo3.org/53300


Reviewed-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Tested-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>

typo3/sysext/saltedpasswords/Documentation/DevelopersGuide/Index.rst

@@ -40,7 +40,7 @@ Example implementation for TYPO3 frontend:
    $password = 'XXX';
    $saltedPassword = '';
 
-       if (\TYPO3\CMS\Saltedpasswords\Utility::SaltedPasswordsUtility::isUsageEnabled('FE')) {
+       if (\TYPO3\CMS\Saltedpasswords\Utility\SaltedPasswordsUtility::isUsageEnabled('FE')) {
                $objSalt = \TYPO3\CMS\Saltedpasswords\Salt\SaltFactory::getSaltingInstance(NULL);
                if (is_object($objSalt)) {
                        $saltedPassword = $objSalt->getHashedPassword($password);