Clarify wording of event::wait_and_throw()

Tweak the wording of event::wait_and_throw() to allow an implementation
to throw asynchornous errors unrelated to the queue/context used to
enqueue the commands for which the event is waiting on.

adoc/chapters/programming_interface.adoc

@@ -3835,10 +3835,10 @@ void wait_and_throw()
    a@ Blocks until all commands associated with this event and any dependent
       events have completed.
 
-Any uncomsumed <<async-error,asynchronous errors>> held by queues (or their
-associated contexts) which were used to enqueue commands associated with this
-event and any dependent events, are passed to the approriate <<async-handler>>
-as described in <<subsubsec:async.handler.priorities>>.
+At least all uncomsumed <<async-error,asynchronous errors>> held by queues (or
+their associated contexts) which were used to enqueue commands associated with
+this event and any dependent events, are passed to the approriate
+<<async-handler>> as described in <<subsubsec:async.handler.priorities>>.
 
 [NOTE]
 ====