The current link is to a non-existent file. I had a look at the repo, spotted the file containing the UI configuration key and updated the link
> **Note:** The old flags `--webui-config` and `--webui-config-file` are deprecated but still work as aliases.
-You may find available preferences in [settings-config.ts](../ui/src/lib/constants/settings-config.ts).
+You may find available preferences in [settings-keys.ts](../ui/src/lib/constants/settings-keys.ts).