Replaces the existing `models.md` file with a comprehensive new version.
This updated documentation details the Open WebUI Preset System, explaining how to wrap base models to create custom agents with specific system prompts, knowledge collections, tools, and dynamic variables. It covers creation, management, and advanced parameters.
- Updating Models documentation to reflect that discover models button has been removed.
- Adding in information as to how to download/pull models for retards like me.