selftests: mlxsw: Fix typo in qos_mc_aware.sh

This patch fixes some spelling typo in qos_mc_aware.sh
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh

@@ -262,7 +262,7 @@ test_mc_aware()
 
 	stop_traffic
 
-	log_test "UC performace under MC overload"
+	log_test "UC performance under MC overload"
 
 	echo "UC-only throughput  $(humanize $ucth1)"
 	echo "UC+MC throughput    $(humanize $ucth2)"
@@ -316,7 +316,7 @@ test_uc_aware()
 
 	stop_traffic
 
-	log_test "MC performace under UC overload"
+	log_test "MC performance under UC overload"
 	echo "    ingress UC throughput $(humanize ${uc_ir})"
 	echo "    egress UC throughput  $(humanize ${uc_er})"
 	echo "    sent $attempts BC ARPs, got $passes responses"