[TASK] Unify spelling of "Ajax"

[linawolf]

references: #2331
releases: main, 11.5

[github-actions]

The backport to 11.5 failed:

The process '/usr/bin/git' failed with exit code 1

stderr

error: could not apply 692d08ad... [TASK] Unify spelling of "Ajax"
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".

stdout

Auto-merging Documentation/ApiOverview/Backend/Ajax.rst
Auto-merging Documentation/ApiOverview/Backend/BackendRouting.rst
CONFLICT (modify/delete): Documentation/ApiOverview/FlashMessages/_ES6/_flash-message-deferred-action-demo.js deleted in HEAD and modified in 692d08ad ([TASK] Unify spelling of "Ajax").  Version 692d08ad ([TASK] Unify spelling of "Ajax") of Documentation/ApiOverview/FlashMessages/_ES6/_flash-message-deferred-action-demo.js left in tree.
Auto-merging Documentation/ApiOverview/FormEngine/Rendering/Index.rst
CONFLICT (content): Merge conflict in Documentation/ApiOverview/FormEngine/Rendering/Index.rst
Auto-merging Documentation/ApiOverview/Icon/Index.rst
CONFLICT (content): Merge conflict in Documentation/ApiOverview/Icon/Index.rst
Auto-merging Documentation/ApiOverview/RequestLifeCycle/Bootstrapping.rst
Auto-merging Documentation/CodeSnippets/Events/Backend/AfterPageColumnsSelectedForLocalizationEvent.rst.txt
CONFLICT (content): Merge conflict in Documentation/CodeSnippets/Events/Backend/AfterPageColumnsSelectedForLocalizationEvent.rst.txt
Auto-merging Documentation/Configuration/Typo3ConfVars/FE.rst
Auto-merging Documentation/ExtensionArchitecture/FileStructure/Configuration/Backend/Index.rst

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-11.5 11.5
# Navigate to the new working tree
cd .worktrees/backport-11.5
# Create a new branch
git switch --create backport-2391-to-11.5
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick 692d08ad16773b8f120f23496f9f85b6e10a4872
# Push it to GitHub
git push --set-upstream origin backport-2391-to-11.5
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-11.5

Then, create a pull request where the base branch is 11.5 and the compare/head branch is backport-2391-to-11.5.