Fix k8s deployment docs title.

docs/deployment/kubernetes/_category_.yaml

@@ -0,0 +1,3 @@
+label: 'Kubernetes'
+position: 2
+collapsed: true

docs/deployment/kubernetes/gke.md

@@ -1,5 +1,6 @@
 ---
-title: Google GKE
+title: Install Quickwit on Google GKE
+sidebar_label: Google GKE
 sidebar_position: 2
 ---
 

docs/deployment/kubernetes/glasskube.md

@@ -1,12 +1,11 @@
 ---
-title: Glasskube
+title: Install Quickwit with Glasskube
+sidebar_label: Glasskube
 sidebar_position: 3
 ---
 
 [Glasskube](https://glasskube.dev) is a package manager for Kubernetes that empowers you to effortlessly install, upgrade, configure, and manage your Kubernetes cluster packages, all while streamlining repetitive and cumbersome maintenance tasks.
 
-# Install Quickwit using Glasskube
-
 ## Requirements
 
 To deploy Quickwit on Kubernetes, you will need:

docs/deployment/kubernetes/helm.md

@@ -1,13 +1,12 @@
 ---
-title: Kubernetes
+title: Install Quickwit with Helm
+sidebar_label: Helm
 sidebar_position: 1
 ---
 
 [Helm](https://helm.sh) is a package manager for Kubernetes that allows you to configure, install, and upgrade containerized applications in a Kubernetes cluster in a version-controlled and reproducible way.
 
-## Install Quickwit using Helm
-
-Install Quickwit on Kubernetes with the official Quickwit Helm chart. If you encounter any problem with the chart, please, open an issue in our [GitHub repository](https://github.com/quickwit-oss/helm-charts).
+You can install Quickwit on Kubernetes with the official Quickwit Helm chart. If you encounter any problem with the chart, please, open an issue in our [GitHub repository](https://github.com/quickwit-oss/helm-charts).
 
 ## Requirements