OSDOCS-18665-18: CP review for CORE-1

Author: dfitzmau

networking/networking_overview/cidr-range-definitions.adoc

@@ -17,7 +17,7 @@ To ensure stable and accurate network routing in {product-title} clusters that u
 For {product-title} 4.17 and later versions, clusters use `169.254.0.0/17` for IPv4 and `fd69::/112` for IPv6 as the default masquerade subnet. You must avoid these ranges. For upgraded clusters, there is no change to the default masquerade subnet.
 ====
 
-The following subnet types and are mandatory for a cluster that uses OVN-Kubernetes:
+The following subnet types are mandatory for a cluster that uses OVN-Kubernetes:
 
 * Join: Uses a join switch to connect gateway routers to distributed routers. A join switch reduces the number of IP addresses for a distributed router. For a cluster that uses the OVN-Kubernetes plugin, an IP address from a dedicated subnet is assigned to any logical port that attaches to the join switch.
 * Masquerade: Prevents collisions for identical source and destination IP addresses that are sent from a node as hairpin traffic to the same node after a load balancer makes a routing decision.