doc: fix a typo of microtaskMode
- tasks scheduled through `Promise`s any `async function`s
+ tasks scheduled through `Promise`s and `async function`sChecklist
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documentation is changed or added -
commit message follows commit guidelines
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
- tasks scheduled through `Promise`s any `async function`s
+ tasks scheduled through `Promise`s and `async function`s