Clarify Service-to-Pod wording and normalize DNS addon spelling

Author: arnab-logs

content/en/docs/concepts/containers/container-environment.md

@@ -42,7 +42,7 @@ as are any environment variables specified statically in the container image.
 A list of all services that were running when a Container was created is available to that Container as environment variables.
 This list is limited to services within the same namespace as the new Container's Pod and Kubernetes control plane services.
 
-For a service named *foo* that exposes a Pod running a Container named *bar*,
+For a service named *foo* that exposes a set of Pods, each running a container named *bar*,
 the following variables are defined:
 
 ```shell
@@ -51,7 +51,7 @@ FOO_SERVICE_PORT=<the port the service is running on>
 ```
 
 Services have dedicated IP addresses and are available to the Container via DNS,
-if [DNS add-on](https://releases.k8s.io/v{{< skew currentPatchVersion >}}/cluster/addons/dns/) is enabled. 
+if [DNS addon](https://releases.k8s.io/v{{< skew currentPatchVersion >}}/cluster/addons/dns/) is enabled.