Update docs/antrea-network-policy.md

Update docs

Co-authored-by: Quan Tian <qtian@vmware.com>

docs/antrea-network-policy.md

@@ -1120,7 +1120,7 @@ The IPs include:
 2. The Antrea gateway IP (the IP address of the interface antrea-agent will create and use for Node-to-Pod communication)
 3. The transport IP (the IP address of the interface used for tunneling or routing the traffic across Nodes) if it's different from Node IP
 
-Traffic to/from other interfaces of the Node will be ignored.
+Traffic to/from other IPs of the Node will be ignored.
 
 For example, the following rule applies to Pods with label `app=antrea-test-app` and will `Drop` egress traffic to
 Nodes on TCP port 6443 which have the labels `node-role.kubernetes.io/control-plane`.