Editorial: disambiguate NotifyWaiter calls (tc39#2667)

Extracted from tc39#2547 (comment)

Co-authored-by: Michael Ficarra <mficarra@shapesecurity.com>

spec.html

@@ -41581,9 +41581,9 @@ <h1>
           1. Assert: _W_ is equivalent to AgentSignifier().
           1. Assert: _W_ is on the list of waiters in _WL_.
           1. Assert: AgentCanSuspend() is *true*.
-          1. Perform LeaveCriticalSection(_WL_) and suspend _W_ for up to _timeout_ milliseconds, performing the combined operation in such a way that a notification that arrives after the critical section is exited but before the suspension takes effect is not lost. _W_ can notify either because the timeout expired or because it was notified explicitly by another agent calling NotifyWaiter(_WL_, _W_), and not for any other reasons at all.
+          1. Perform LeaveCriticalSection(_WL_) and suspend _W_ for up to _timeout_ milliseconds, performing the combined operation in such a way that a notification that arrives after the critical section is exited but before the suspension takes effect is not lost. _W_ can notify either because the timeout expired or because it was notified explicitly by another agent calling NotifyWaiter with arguments _WL_ and _W_, and not for any other reasons at all.
           1. Perform EnterCriticalSection(_WL_).
-          1. If _W_ was notified explicitly by another agent calling NotifyWaiter(_WL_, _W_), return *true*.
+          1. If _W_ was notified explicitly by another agent calling NotifyWaiter with arguments _WL_ and _W_, return *true*.
           1. Return *false*.
         </emu-alg>
       </emu-clause>