Fix a bash command in docs/pages/User/Post-install/discovery.md
"kubectl apply -f" requires an extra "-" in order to recognize as source the STDIN.
@@ -164,8 +164,8 @@ For any `SearchDomain`, you need to configure the following parameters:
Using kubectl, it is also possible to perform the following configuration. A `SearchDomain` for the `example.com`
domain, may be look like:
-```
-cat << "EOF" | kubectl apply -f
+```bash
+cat << "EOF" | kubectl apply -f -
apiVersion: discovery.liqo.io/v1alpha1
kind: SearchDomain
metadata:
