Adding code tabs where the commands differ between linux/windows

Signed-off-by: Nick Beenham <[email protected]>

docs/content/guides/author-apps/kubernetes/how-to-access-secrets/index.md

@@ -97,11 +97,27 @@ kubectl get pods -n dev-demo
 ```
 
 Then, exec into the pod and check the environment variable (substitute the pod name with the one you got from the previous command):
-
+
+{{< tabs "macOS/Linux/WSL" "Windows" >}}
+
+{{% codetab %}}
+
 ```bash
 kubectl -n dev-demo exec demo-d64cc4d6d-xjnjz -- env | grep MY_SECRET
 ```
 
+{{% /codetab %}}
+
+{{% codetab %}}
+
+```powershell
+kubectl -n dev-demo exec demo-d64cc4d6d-xjnjz -- env | findstr MY_SECRET
+```
+
+{{% /codetab %}}
+
+{{< /tabs >}}
+
 ## Cleanup
 
 Run the following command to [delete]({{< ref "guides/deploy-apps/howto-delete" >}}) your app and container: