[docs] Missing documentation for the event system on beta site

[samkearney]

In Tauri v1, there is a Features page about events: https://tauri.app/v1/guides/features/events

In the 1 to 2 migration guide, there is a note that the event system has been improved, which indicates to me that it is not being deprecated: https://beta.tauri.app/guides/upgrade-migrate/from-tauri-1/#event-system

But I am not finding any feature page on the beta docs site about events (e.g. nothing beyond raw API documentation)

[FabianLars]

moved to docs repo

Also related: https://github.com/tauri-apps/tauri-docs/issues/1152

[tweidinger]

Fixed by #2468 and related PRs