correcting comments

internal/transport/http2_client.go

@@ -87,7 +87,7 @@
 	// goAway is closed to notify the upper layer (i.e., addrConn.transportMonitor)
 	// that the server sent GoAway on this transport.
 	goAway chan struct{}
-	//keepAliveDone channel is closed when the keepAlive go routine exits
+	// This channel is closed when the keepAlive goroutine exits.
 	keepAliveDone chan struct{}
 	framer        *framer
 	// controlBuf delivers all the control related tasks (e.g., window
@@ -1342,7 +1342,7 @@
 	id := f.LastStreamID
 	if id > 0 && id%2 == 0 {
 		t.mu.Unlock()
 		return connectionErrorf(true, nil, "received goaway with non-zero even-numbered stream id: %v", id)
 	}
 	// A client can receive multiple GoAways from the server (see
 	// https://github.com/grpc/grpc-go/issues/1387).  The idea is that the first
@@ -1359,7 +1359,7 @@
 		// If there are multiple GoAways the first one should always have an ID greater than the following ones.
 		if id > t.prevGoAwayID {
 			t.mu.Unlock()
 			return connectionErrorf(true, nil, "received goaway with stream id: %v, which exceeds stream id of previous goaway: %v", id, t.prevGoAwayID)
 		}
 	default:
 		t.setGoAwayReason(f)