doc: change 'be will' to 'will be'

PR-URL: #34999
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Harshitha K P <harshitha014@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>

doc/api/events.md

@@ -1074,7 +1074,7 @@ In either case, the handler function will be invoked with the `event` argument
 passed to the `eventTarget.dispatchEvent()` function.
 
 Async functions may be used as event listeners. If an async handler function
-rejects, the rejection will be captured and be will handled as described in
+rejects, the rejection will be captured and will be handled as described in
 [`EventTarget` error handling][].
 
 An error thrown by one handler function will not prevent the other handlers