add docs

site/content/docs/02-template-syntax.md

@@ -471,6 +471,7 @@ The following modifiers are available:
 * `preventDefault` — calls `event.preventDefault()` before running the handler
 * `stopPropagation` — calls `event.stopPropagation()`, preventing the event reaching the next element
 * `passive` — improves scrolling performance on touch/wheel events (Svelte will add it automatically where it's safe to do so)
+* `nonpassive` — explicitly set `passive: false`
 * `capture` — fires the handler during the *capture* phase instead of the *bubbling* phase
 * `once` — remove the handler after the first time it runs
 * `self` — only trigger handler if event.target is the element itself

site/content/tutorial/05-events/03-event-modifiers/text.md

@@ -21,6 +21,7 @@ The full list of modifiers:
 * `preventDefault` — calls `event.preventDefault()` before running the handler. Useful for client-side form handling, for example.
 * `stopPropagation` — calls `event.stopPropagation()`, preventing the event reaching the next element
 * `passive` — improves scrolling performance on touch/wheel events (Svelte will add it automatically where it's safe to do so)
+* `nonpassive` — explicitly set `passive: false`
 * `capture` — fires the handler during the *capture* phase instead of the *bubbling* phase ([MDN docs](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Building_blocks/Events#Event_bubbling_and_capture))
 * `once` — remove the handler after the first time it runs
 * `self` — only trigger handler if event.target is the element itself