doc: improve docs for Http2Session:frameError

Improve documentation regarding the callback parameters for the
frameError event for instances of Http2Session, making it inline with
the currently accepted structure, like the rest of the documentation.

Refs: nodejs/help#877 (comment)

doc/api/http2.md

@@ -159,18 +159,16 @@ an `Http2Session`.
 added: v8.4.0
 -->
 
+* `type` {integer} The frame type.
+* `code` {integer} The error code.
+* `id` {integer} The stream id (or `0` if the frame isn't associated with a
+  stream).
+
 The `'frameError'` event is emitted when an error occurs while attempting to
 send a frame on the session. If the frame that could not be sent is associated
 with a specific `Http2Stream`, an attempt to emit `'frameError'` event on the
 `Http2Stream` is made.
 
-When invoked, the handler function will receive three arguments:
-
-* An integer identifying the frame type.
-* An integer identifying the error code.
-* An integer identifying the stream (or 0 if the frame is not associated with
-  a stream).
-
 If the `'frameError'` event is associated with a stream, the stream will be
 closed and destroyed immediately following the `'frameError'` event. If the
 event is not associated with a stream, the `Http2Session` will be shut down