Fix Grammar

Simple typo fix

README.md

@@ -326,7 +326,7 @@ This is usually accomplished using a concept called overlay networking, which is
 
 All the networking shenanigans are done and out of the way. What's left? Well we need to actually start out workload containers. 
 
-Once the sandbox has finished initializing and is active, the kubelet can begin creating containers for it. It first [starts any init containers](https://github.com/kubernetes/kubernetes/blob/5adfb24f8f25a0d57eb9a7b158db46f9f46f0d80/pkg/kubelet/kuberuntime/kuberuntime_manager.go#L690) as defined in the PodSpec, and will then start the main containers themselves. The process for doing is this: 
+Once the sandbox has finished initializing and is active, the kubelet can begin creating containers for it. It first [starts any init containers](https://github.com/kubernetes/kubernetes/blob/5adfb24f8f25a0d57eb9a7b158db46f9f46f0d80/pkg/kubelet/kuberuntime/kuberuntime_manager.go#L690) as defined in the PodSpec, and will then start the main containers themselves. The process for doing this is: 
 
 1. [Pull the image](https://github.com/kubernetes/kubernetes/blob/5f9f4a1c5939436fa320e9bc5973a55d6446e59f/pkg/kubelet/kuberuntime/kuberuntime_container.go#L90) for the container. Any secrets that are defined in the PodSpec are used for private registries.
 1. [Create the container](https://github.com/kubernetes/kubernetes/blob/5f9f4a1c5939436fa320e9bc5973a55d6446e59f/pkg/kubelet/kuberuntime/kuberuntime_container.go#L115) via CRI. It does this by populating a `ContainerConfig` struct (in which the command, image, labels, mounts, devices, environment variables etc. are defined) from the parent PodSpec and then sending that via protobufs to the CRI plugin. For Docker, it deserializes the payload and populates its own config structures to send to the Daemon API. In the process it applies a few metadata labels (such container type, log path, sandbox ID) to the container.