Improvements for markdown formatting (#12193)

* Fixed markdown formatting

* Resolved usage of 'shell' instead of 'yaml'

* Removed unknown 'log' keyword

content/en/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information.md

@@ -84,7 +84,7 @@ builder="john-doe"
 
 Get a shell into the Container that is running in your Pod:
 
-```
+```shell
 kubectl exec -it kubernetes-downwardapi-volume-example -- sh
 ```
 
@@ -177,7 +177,7 @@ kubectl create -f https://k8s.io/examples/pods/inject/dapi-volume-resources.yaml
 
 Get a shell into the Container that is running in your Pod:
 
-```
+```shell
 kubectl exec -it kubernetes-downwardapi-volume-example-2 -- sh
 ```