SelfHosted: adjust k8s headline

Author: glaubinix

docs/self-hosted/kubernetes-embedded.md

@@ -1,4 +1,4 @@
-# Installing Private Packagist Self-Hosted in a k8s cluster installed with kURL
+# Installing Private Packagist Self-Hosted in a Kubernetes cluster installed with kURL
 ##
 
 Private Packagist Self-Hosted leverages the [kots](https://docs.replicated.com/reference/kots-cli-getting-started)

docs/self-hosted/kubernetes-maintenance.md

@@ -13,7 +13,7 @@ behavior changes and major bugfixes each release introduces.
 New versions that ask you to upgrade KOTS (Kubernetes Off-The-Shelf), the Replicated tool used to distribute Private Packagist,
 require that you download and rerun the install script via the command below.
 
-#### Update KOTS for Private Packagist Self-Hosted Kubernetes in a cluster installed with kURL
+#### Update KOTS for Private Packagist Self-Hosted Kubernetes in a Kubernetes cluster installed with kURL
 
 Please note that running the command will take a while as it will also updates Kubernetes and other dependencies of Private Packagist Self-Hosted.
 Private Packagist and the Replicated Management Console will become temporarily unavailable.

docs/self-hosted/kubernetes.md

@@ -17,7 +17,7 @@ an embedded Kubernetes cluster on a linux machine.
 
 If you already have an existing Kubernetes cluster running, follow [this guide](./kubernetes-existing.md).
 
-#### Installing Private Packagist Self-Hosted Kubernetes in a cluster installed with kURL
+#### Installing Private Packagist Self-Hosted Kubernetes in a Kubernetes cluster installed with kURL
 
 Don't use Kubernetes? Use the installer that takes care of installing Private Packagist Self-Hosted on a linux
 machine following [this guide](./kubernetes-embedded.md).