This was previously required, but now it's only usefuly for more
advanced settings, not typical for self-hosting users.
With recent updates, the user's selected chat model is used for both
Khoj's train of thought and response. This makes it easy to
switch your preferred chat model directly from the user settings
page and not have to update this in the admin panel as well.
Reflect these code changse in the docs, by removing the unnecessary
step for self-hosted users to create a server chat setting when using
an OpenAI proxy service like Ollama, LiteLLM etc.
- Update references to the settings page to use new url across docs
and code
- Rename desktop and web settings page to settigns.html instead of
config[ure].html