Documentation: networking: switchdev: add missing "and" word

Even though this is clear from the context, it is nice to actually be
grammatically correct.

Fixes: 0f22ad45 ("Documentation: networking: switchdev: clarify device driver behavior")
Reported-by: NIdo Schimmel <idosch@nvidia.com>
Signed-off-by: NVladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/networking/switchdev.rst

@@ -523,7 +523,7 @@ as untagged packets, since the bridge device does not allow the manipulation of
 VID 0 in its database.
 
 When the bridge has VLAN filtering enabled and a PVID is not configured on the
-ingress port, untagged 802.1p tagged packets must be dropped. When the bridge
+ingress port, untagged and 802.1p tagged packets must be dropped. When the bridge
 has VLAN filtering enabled and a PVID exists on the ingress port, untagged and
 priority-tagged packets must be accepted and forwarded according to the
 bridge's port membership of the PVID VLAN. When the bridge has VLAN filtering