Correct grammatical error

draft-ietf-quic-http.md

@@ -515,14 +515,15 @@ The CANCEL_REQUEST frame (type=0x3) is used to request cancellation of a request
 prior to the response stream being created.  This frame can be used to cancel
 server push requests that are initiated with a PUSH_PROMISE.
 
-The frame identifies a server push request is identified by Push ID (see
+The CANCEL_REQUEST frame identifies a server push request by Push ID (see
 {{frame-push-promise}}).
 
 When a server receives this frame, it aborts sending the response for the
-identified request.  If the server has not yet started to send the server push,
-it can use the receipt of a CANCEL_REQUEST frame to avoid opening a stream.  If
-the push stream has been opened by the server, the server SHOULD sent a QUIC
-RST_STREAM frame on those streams and cease transmission of the response.
+identified server push.  If the server has not yet started to send the server
+push, it can use the receipt of a CANCEL_REQUEST frame to avoid opening a
+stream.  If the push stream has been opened by the server, the server SHOULD
+sent a QUIC RST_STREAM frame on those streams and cease transmission of the
+response.
 
 A server can send this frame to indicate that it won't be sending a response
 prior to creation of a push stream.  Once the push stream has been created, a