Change QBONE to uppercase in comments.

This is a follow-up to achernya@'s comment on cl/297422796.

gfe-relnote: n/a (comment-only change)
PiperOrigin-RevId: 297568701
Change-Id: I0007249a74a1c6ae3f26d969c74812523b81886c
diff --git a/quic/qbone/qbone_packet_exchanger.h b/quic/qbone/qbone_packet_exchanger.h
index afdfc2e..1b3577a 100644
--- a/quic/qbone/qbone_packet_exchanger.h
+++ b/quic/qbone/qbone_packet_exchanger.h
@@ -12,7 +12,7 @@
 namespace quic {
 
 // Handles reading and writing on the local network and exchange packets between
-// the local network with a Qbone connection.
+// the local network with a QBONE connection.
 class QbonePacketExchanger : public QbonePacketWriter {
  public:
   // The owner might want to receive notifications when read or write fails.