fixed a typo

networking/concepts/03-linux-networking.md

@@ -12,7 +12,7 @@ A **Linux bridge** is a Layer 2 device that is the virtual implementation of a p
 
 
 ### Network Namespaces
-A Linux **network namespace** is an isolated network stack in the kernel with its own interfaces, routes, and firewall rules. It is a security aspect of containers and Linux, used to isolate containers. In networking terminology they are akin to a VRF that segments the network control and data plane inside the host. Network namespaces ensure that two containers on the same host will not be able to communicate with each other or even the host itself unless configured to do so via Docker networks. Typically, CNM network drivers implement separate namespaces for each container. However, containers can share the same network namespace or even be a part of the host's network namespace. The host network namespace containers the host interfaces and host routing table. This network namespace is called the global network namespace.
+A Linux **network namespace** is an isolated network stack in the kernel with its own interfaces, routes, and firewall rules. It is a security aspect of containers and Linux, used to isolate containers. In networking terminology they are akin to a VRF that segments the network control and data plane inside the host. Network namespaces ensure that two containers on the same host will not be able to communicate with each other or even the host itself unless configured to do so via Docker networks. Typically, CNM network drivers implement separate namespaces for each container. However, containers can share the same network namespace or even be a part of the host's network namespace. The host network namespace contains the host interfaces and host routing table. This network namespace is called the global network namespace.
 
 ### Virtual Ethernet Devices
 A **virtual ethernet device** or **veth** is a Linux networking interface that acts as a connecting wire between two network namespaces. A veth is a full duplex link that has a single interface in each namespace. Traffic in one interface is directed out the other interface. Docker network drivers utilize veths to provide explicit connections between namespaces when Docker networks are created. When a container is attached to a Docker network, one end of the veth is placed inside the container (usually seen as the `ethX` interface) while the other is attached to the Docker network.