docs: Use wbitt/network-multitool for dns guide.
Docker image praqma/network-multitool name changed to wbitt/network-multitool.
To be future proof, we change the name in the guide.
[0]
@@ -23,7 +23,7 @@ POD TYPE QTYPE NAME
Run a pod on a different terminal and perform some DNS requests:
```bash
-$ kubectl -n demo run mypod -it --image=praqma/network-multitool -- /bin/sh
+$ kubectl -n demo run mypod -it --image=wbitt/network-multitool -- /bin/sh
# nslookup www.microsoft.com
# nslookup www.google.com
# nslookup www.amazon.com
