chore: Add the missing final newlines and drop trailing whitespace

The pre-commit whitespace hooks only see the files a change touches, so the
spelling fixes pulled these four into scope.

Author: lfrancke

modules/contributor/pages/adr/ADR001-choose_project_language.adoc

@@ -51,4 +51,4 @@ Chosen option: "English", because the desire to create an active community with
 === English
 
 * Good, because it allows growing an international community
-* Bad, would initially add a small language barrier that is not strictly speaking necessary
+* Bad, would initially add a small language barrier that is not strictly speaking necessary

modules/contributor/pages/adr/ADR015-using_values_from_configmaps.adoc

@@ -86,4 +86,4 @@ Accessing the content of these mounted objects would then need to be done in an
 
 * Good, because mounting the ConfigMap/Secret directly into the pod allows the restart controller to automatically restart a Pod if a mounted object changes. Otherwise, changes would not be propagated or the Operator would have to watch the ConfigMap/Secret for changes itself. The watching/restarting is done once by Kubernetes + the restart controller and makes our Operators simpler
 * Bad, because the mounted properties cannot be validated by the Operator. Although Kubernetes at least verifies that all the properties that should be mounted exist
-* Bad, because it is more difficult to see which config is actually used to run the product, as the actual config is only finally assembled inside of the container
+* Bad, because it is more difficult to see which config is actually used to run the product, as the actual config is only finally assembled inside of the container

modules/contributor/pages/adr/ADR024-out-of-cluster_access.adoc

@@ -15,7 +15,7 @@ Technical Story: https://github.com/stackabletech/listener-operator/pull/1
 == Context and Problem Statement
 // Describe the context and problem statement, e.g., in free form using two to three sentences. You may want to articulate the problem in form of a question.
 
-Eventually, the products we host in Kubernetes will need to be accessed from outside of the cluster, as this is where the client is. Our current solution for this is NodePort services. They are a simple and common solution for on-premise clusters, where nodes are reachable hosts in the local network. To get traffic into a Kubernetes cluster that runs in a public cloud, NodePorts do not work; instead LoadBalancers are the preferred solution. 
+Eventually, the products we host in Kubernetes will need to be accessed from outside of the cluster, as this is where the client is. Our current solution for this is NodePort services. They are a simple and common solution for on-premise clusters, where nodes are reachable hosts in the local network. To get traffic into a Kubernetes cluster that runs in a public cloud, NodePorts do not work; instead LoadBalancers are the preferred solution.
 
 While a Pods name is stable across restarts and rescheduling, the IP of the NodePort can change if a Pod is rescheduled to a different node. This means that external addresses from simple NodePorts are not stable. LoadBalancers are not tied to nodes, but they are often not available in on-prem clusters.
 At the moment we deploy NodePort Services per RoleGroup; clients cannot connect to an individual Pod in a RoleGroup.
@@ -188,4 +188,4 @@ With ARP, the LoadBalancers appear as "real" IP addresses in the same subnet as
 
 === Calico
 
-link:https://www.tigera.io/project-calico/[Calico] requires BGP, another component that we cannot make required for customer setups.
+link:https://www.tigera.io/project-calico/[Calico] requires BGP, another component that we cannot make required for customer setups.

modules/contributor/pages/adr/drafts/ADRx-choose_authorization_engine.adoc

@@ -100,4 +100,4 @@ It allows integration with LDAP and AD, offers authorization, a clustered mode f
 == Links
 
 * [Link type] [Link to ADR] <!-- example: Refined by [ADR-0005](0005-example.md) -->
-* … <!-- numbers of links can vary -->
+* … <!-- numbers of links can vary -->