[DOCS] Fix references in admin panel

Resolves: #103305
Related: #103238
Releases: main, 12.4, 11.5
Change-Id: I7fd40ea54fd51663222513b803c64ba2a8471d58
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83278


Tested-by: Lina Wolf <112@linawolf.de>
Reviewed-by: Lina Wolf <112@linawolf.de>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/adminpanel/Documentation/Installation/Index.rst

@@ -55,8 +55,8 @@ Next steps
 ==========
 
 Configure the Admin Panel to be displayed to logged-in backend admins the
-TypoScript configuration :t3-typoscript:`config.admPanel = 1 <config.admPanel>`.
+TypoScript configuration :ref:`config.admPanel = 1 <typoscript-config-admpanel>`.
 
-By default the admin panel is displayed to logged-in admins only. This behaviour
-can be changed by setting :t3-user-tsconfig:`admPanel.enable` for certain
-backend users or groups.
+By default, the admin panel is displayed to logged-in admins only. This behaviour
+can be changed by setting :ref:`admPanel.enable <tsconfig-admpanel-enable>` for
+certain backend users or groups.