Use a regular Event for AudioContext.onerror (#2593)

index.bs

@@ -2196,7 +2196,7 @@ Attributes</h4>
     <ins cite=#2567>
     : <dfn>onerror</dfn>
     ::
-        An [=event handler=] for the {{ErrorEvent}} dispatched from an {{AudioContext}}. The event
+        An [=event handler=] for the {{Event}} dispatched from an {{AudioContext}}. The event
             type of this handler is <dfn event for=AudioContext>error</dfn> and the user agent can
             dispatch this event in the following cases:
 
@@ -12941,7 +12941,7 @@ The {{AudioContext}} |audioContext| performs the following steps on <a>rendering
 
     1. [=Queue a media element task=] to execute the following steps:
 
-        1. [=Fire an event=] named {{AudioContext/error}} at |audioContext| using {{ErrorEvent}}.
+        1. [=Fire an event=] named {{AudioContext/error}} at |audioContext|.
 
         1. Set the |audioContext|'s {{[[suspended by user]]}} to <code>false</code>.
 
@@ -12958,7 +12958,7 @@ The {{AudioContext}} |audioContext| performs the following steps on <a>rendering
 
     1. [=Queue a media element task=]to execute the following steps:
 
-        1. [=Fire an event=] named {{AudioContext/error}} at |audioContext| using {{ErrorEvent}}.
+        1. [=Fire an event=] named {{AudioContext/error}} at |audioContext|.
 
 Note: An example of system audio resource errors would be when an external or wireless audio device
     becoming disconnected during the active rendering of the {{AudioContext}}.