ovn-nb.xml: Fix minor typo.
If set, indicates the IP address to use to force SNAT a packet
that has already been load-balanced in the gateway router. When
multiple gateway routers are configured, a packet can potentially
- enter any of the gateway router, get DNATted as part of the load-
+ enter any of the gateway routers, get DNATted as part of the load-
balancing and eventually reach the logical switch port.
For the return traffic to go back to the same gateway router (for
unDNATing), the packet needs a SNAT in the first place. This can be
