[DOCS] Add information about storage of auto-created redirects

Related: #99044
Resolves: #99524
Resolves: https://github.com/TYPO3-Documentation/Changelog-To-Doc/issues/259
Releases: main
Change-Id: I0f1812491ca276d5df35ac04384da95a0b4f028b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77360


Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/redirects/Documentation/Setup/Index.rst

@@ -51,6 +51,11 @@ The `httpStatusCode` does not affect the default status code for manually create
 redirects. This can be adjusted via TCA
 :php:`$GLOBALS['TCA']['sys_redirect']['columns']['target_statuscode']['config']['default']`.
 
+..  versionchanged:: 12.1
+    Since TYPO3 v12.1, automatically created redirect records are stored on the
+    configured root page ID of the site. Previously, they were initially stored
+    on the top root page or later on the changed page.
+
 .. seealso::
 
     The `settings` in the site configuration are generally explained in