doc: fix small grammatical issues in timers.md

PR-URL: #35203
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>

doc/api/timers.md

@@ -130,15 +130,14 @@ of the Node.js application.
 added: v14.9.0
 -->
 
-* Returns: {integer} number that can be used to reference this `timeout`
-
-Coerce a `Timeout` to a primitive, a primitive will be generated that
-can be used to clear the `Timeout`.
-The generated number can only be used in the same thread where timeout
-was created. Therefore to use it cross [`worker_threads`][] it has
-to first be passed to a correct thread.
-This allows enhanced compatibility with browser's `setTimeout()`, and
-`setInterval()` implementations.
+* Returns: {integer} a number that can be used to reference this `timeout`
+
+Coerce a `Timeout` to a primitive. The primitive can be used to
+clear the `Timeout`. The primitive can only be used in the
+same thread where the timeout was created. Therefore, to use it
+across [`worker_threads`][] it must first be passed to the correct
+thread. This allows enhanced compatibility with browser
+`setTimeout()` and `setInterval()` implementations.
 
 ## Scheduling timers