selftests: mlxsw: egress_vid_classification: Fix the diagram

The topology diagram implies that $swp1 and $swp2 are members of the bridge
br0, when in fact only their uppers, $swp1.10 and $swp2.10 are. Adjust the
diagram.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -16,10 +16,9 @@
 # +----------------|--+                   +--|-----------------+
 #                  |                         |
 # +----------------|-------------------------|-----------------+
-# | SW             |                         |                 |
+# | SW       $swp1 +                         + $swp2           |
+# |                |                         |                 |
 # | +--------------|-------------------------|---------------+ |
-# | |        $swp1 +                         + $swp2         | |
-# | |              |                         |               | |
 # | |     $swp1.10 +                         + $swp2.10      | |
 # | |                                                        | |
 # | |                           br0                          | |