Update event-loop-timers-and-nexttick.md

Fix typo in event loop documentation: replace 'a person' with 'the event loop' for clarity and accuracy.

Signed-off-by: Saeed <32861976+saeid1994@users.noreply.github.com>

Author: saeid1994

apps/site/pages/en/learn/asynchronous-work/event-loop-timers-and-nexttick.md

@@ -190,7 +190,7 @@ those timers' callbacks.
 
 ### check
 
-This phase allows a person to execute callbacks immediately after the
+This phase allows the event loop to execute callbacks immediately after the
 **poll** phase has completed. If the **poll** phase becomes idle and
 scripts have been queued with `setImmediate()`, the event loop may
 continue to the **check** phase rather than waiting.