net: aquantia: fix spelling mistake "specfield" -> "specified"

There is a spelling mistake in a netdev_err message. Fix this.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_filters.c

@@ -136,7 +136,7 @@ aq_check_approve_fl2(struct aq_nic_s *aq_nic,
 	if (be16_to_cpu(fsp->m_ext.vlan_tci) == VLAN_PRIO_MASK &&
 	    fsp->m_u.ether_spec.h_proto == 0U) {
 		netdev_err(aq_nic->ndev,
-			   "ethtool: proto (ether_type) parameter must be specfied");
+			   "ethtool: proto (ether_type) parameter must be specified");
 		return -EINVAL;
 	}