[DOCS] Use LocalConfiguration.php in workspaces docs

ext_localconf.php still references "localconf.php" even
though it is called "LocalConfiguration.php" since
TYPO3 v6.0.

Resolves: #95314
Releases: master, 10.4
Change-Id: Idd8f85bbc9351959b0be35e353f8237cf33b54e8
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71183
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/workspaces/ext_localconf.php

@@ -24,7 +24,7 @@
 $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_befunc.php']['viewOnClickClass']['workspaces'] = BackendUtilityHook::class;
 $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/alt_doc.php']['makeEditForm_accessCheck']['workspaces'] = BackendUtilityHook::class . '->makeEditForm_accessCheck';
 
-// Register workspaces cache if not already done in localconf.php or a previously loaded extension.
+// Register workspaces cache if not already done in LocalConfiguration.php or a previously loaded extension.
 if (!is_array($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['workspaces_cache'] ?? false)) {
     $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['workspaces_cache'] = [
         'groups' => ['all']