Update Index.rst

fix typo and wording for "top bar" (not "toolbar")

Author: glmvc

Documentation/Concepts/Cache/Index.rst

@@ -30,14 +30,14 @@ Here are the main ways to clear caches in TYPO3 13:
 *   Clearing Cache in the backend:
 
     *   In the Backend, look for the Clear cache icon, which resembles a
-        lightning bolt. You can find this in the top toolbar.
+        lightning bolt. You can find this in the `top bar <https://docs.typo3.org/permalink/t3start:top-bar>`_.
 
         .. figure:: /Images/ManualScreenshots/ClearCache/Toolbar.png
 
     *   For deeper cache management, you can use the Install Tool:
         In :guilabel:`Admin Tools > Maintenance` you can find the option to
         clear all caches. This will refresh everything, including caches
-        that aren't typically cleared through the backend toolbar.backend
+        that aren't typically cleared through the backend top bar.
 
 *   Clearing caches via Command Line