add video to demo index

Author: samuelcolvin

demo/main.py

@@ -32,6 +32,7 @@ def api_index() -> list[AnyComponent]:
 * `ServerLoad` — see [dynamic modal example](/components#dynamic-modal) and [SSE example](/components#server-load-sse)
 * `Image` - example [here](/components#image)
 * `Iframe` - example [here](/components#iframe)
+* `Video` - example [here](/components#video)
 * `Table` — See [cities table](/table/cities) and [users table](/table/users)
 * `Pagination` — See the bottom of the [cities table](/table/cities)
 * `ModelForm` — See [forms](/forms/login)