doc: improve wording in vm.md

Simplify complex sentence. Remove use of "straightforward".

PR-URL: nodejs#32427
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/vm.md

@@ -362,9 +362,8 @@ specification.
 
 Unlike `vm.Script` however, every `vm.Module` object is bound to a context from
 its creation. Operations on `vm.Module` objects are intrinsically asynchronous,
-in contrast with the synchronous nature of `vm.Script` objects. With the help
-of async functions, however, manipulating `vm.Module` objects is fairly
-straightforward.
+in contrast with the synchronous nature of `vm.Script` objects. The use of
+'async' functions can help with manipulating `vm.Module` objects.
 
 Using a `vm.Module` object requires three distinct steps: creation/parsing,
 linking, and evaluation. These three steps are illustrated in the following