chore: fix typo in comment (#1217)

Author: zhangzhonghe

packages/runtime-dom/src/modules/events.ts

@@ -24,7 +24,7 @@ type EventValueWithOptions = {
 let _getNow: () => number = Date.now
 
 // Determine what event timestamp the browser is using. Annoyingly, the
-// timestamp can either be hi-res ( relative to page load) or low-res
+// timestamp can either be hi-res (relative to page load) or low-res
 // (relative to UNIX epoch), so in order to compare time we have to use the
 // same timestamp type when saving the flush timestamp.
 if (