[TASK] Cleanup manuals (#380)

Remove outdated manuals and add missing system extension manuals.

Releases: main, 12.4

Documentation/Settings.cfg

@@ -27,15 +27,12 @@ use_opensearch =
 
 # Official TYPO3 manuals
 h2document = https://docs.typo3.org/m/typo3/docs-how-to-document/main/en-us/
-# t3cheatsheets = https://docs.typo3.org/m/typo3/docs-cheatsheets/main/en-us/
+# t3content = https://docs.typo3.org/m/typo3/guide-contentandmarketing/main/en-us/
 # t3contribute = https://docs.typo3.org/m/typo3/guide-contributionworkflow/main/en-us/
 t3coreapi = https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/
-# t3docteam = https://docs.typo3.org/m/typo3/team-t3docteam/main/en-us/
 # t3editors = https://docs.typo3.org/m/typo3/tutorial-editors/main/en-us/
 # t3extexample = https://docs.typo3.org/m/typo3/guide-example-extension-manual/main/en-us/
 # t3home = https://docs.typo3.org/
-# t3install = https://docs.typo3.org/m/typo3/guide-installation/main/en-us/
-# t3l10n = https://docs.typo3.org/m/typo3/guide-frontendlocalization/main/en-us/
 t3sitepackage = https://docs.typo3.org/m/typo3/tutorial-sitepackage/main/en-us/
 # t3start = https://docs.typo3.org/m/typo3/tutorial-getting-started/main/en-us/
 t3tca = https://docs.typo3.org/m/typo3/reference-tca/main/en-us/
@@ -53,9 +50,16 @@ ext_core = https://docs.typo3.org/c/typo3/cms-core/main/en-us/
 # ext_felogin = https://docs.typo3.org/c/typo3/cms-felogin/main/en-us/
 # ext_form = https://docs.typo3.org/c/typo3/cms-form/main/en-us/
 # ext_fsc = https://docs.typo3.org/c/typo3/cms-fluid-styled-content/main/en-us/
+# ext_impexp = https://docs.typo3.org/c/typo3/cms-impexp/main/en-us/
 # ext_indexed_search = https://docs.typo3.org/c/typo3/cms-indexed-search/main/en-us/
+# ext_linkvalidator = https://docs.typo3.org/c/typo3/cms-linkvalidator/main/en-us/
 ext_lowlevel = https://docs.typo3.org/c/typo3/cms-lowlevel/main/en-us/
+# ext_reactions = https://docs.typo3.org/c/typo3/cms-reactions/main/en-us/
+# ext_recycler = https://docs.typo3.org/c/typo3/cms-recycler/main/en-us/
+# ext_redirects = https://docs.typo3.org/c/typo3/cms-redirects/main/en-us/
+# ext_reports = https://docs.typo3.org/c/typo3/cms-reports/main/en-us/
 # ext_rte_ckeditor = https://docs.typo3.org/c/typo3/cms-rte-ckeditor/main/en-us/
 # ext_scheduler = https://docs.typo3.org/c/typo3/cms-scheduler/main/en-us/
 # ext_seo = https://docs.typo3.org/c/typo3/cms-seo/main/en-us/
+# ext_t3editor = https://docs.typo3.org/c/typo3/cms-t3editor/main/en-us/
 # ext_workspaces = https://docs.typo3.org/c/typo3/cms-workspaces/main/en-us/