Fixed links / formatting

Author: dervoeti

modules/tutorials/nav.adoc

@@ -2,3 +2,4 @@
 ** xref:authentication_with_openldap.adoc[]
 ** xref:logging-vector-aggregator.adoc[]
 ** xref:enabling_verification_of_image_signatures.adoc[]
+** xref:running_stackable_in_an_airgapped_environment.adoc[]

modules/tutorials/pages/running_stackable_in_an_airgapped_environment.adoc

@@ -28,8 +28,6 @@ Modify your containerd config (usually located at `/etc/containerd/config.toml`)
 [plugins."io.containerd.grpc.v1.cri".registry]
    config_path = "/etc/containerd/certs.d"
 ----
-Then restart the `containerd` service.
-+
-For further information, see https://github.com/containerd/containerd/blob/main/docs/cri/config.md#registry-configuration["Registry configuration"].
+Then restart the `containerd` service. For further information, see https://github.com/containerd/containerd/blob/main/docs/cri/config.md#registry-configuration["Registry configuration"].
 
-* Add an alias for `oci.stackable.tech` to the `/etc/hosts` file on every node (like `10.7.228.12 oci.stackable.tech`), issue a self-signed certificate for `oci.stackable.tech` to your registry and add the certificate to the trusted certificates on every node. Note that if you also want to enforce signature checks for Stackable's images via a policy controller, you will need to add this host alias to the Pod of the policy controller as well (and make it trust the certificate). Learn more about image signature verification xref:concepts:enabling_verification_of_image_signatures.adoc[here].
+* Add an alias for `oci.stackable.tech` to the `/etc/hosts` file on every node (like `10.7.228.12 oci.stackable.tech`), issue a self-signed certificate for `oci.stackable.tech` to your registry and add the certificate to the trusted certificates on every node. Note that if you also want to enforce signature checks for Stackable's images via a policy controller, you will need to add this host alias to the Pod of the policy controller as well (and make it trust the certificate). Learn more about image signature verification xref:tutorials:enabling_verification_of_image_signatures.adoc[here].