MINOR: quic: Congestion controller event trace fix (loss)

Missing event type (loss).
diff --git a/include/haproxy/quic_cc.h b/include/haproxy/quic_cc.h
index 54c54d2..b654fff 100644
--- a/include/haproxy/quic_cc.h
+++ b/include/haproxy/quic_cc.h
@@ -57,7 +57,7 @@
 		              (unsigned long long)ev->ack.acked, ev->ack.time_sent);
 		break;
 	case QUIC_CC_EVT_LOSS:
-		chunk_appendf(buf, "now_ms=%u time_sent=%u", now_ms, ev->loss.time_sent);
+		chunk_appendf(buf, "loss now_ms=%u time_sent=%u", now_ms, ev->loss.time_sent);
 		break;
 	case QUIC_CC_EVT_ECN_CE:
 		chunk_appendf(buf, "ecn_ce");