Reword chart's short description

Chart.yaml

@@ -3,7 +3,7 @@ name: cern-it-monitoring-kubernetes
 version: 0.0.0 # DO NOT UPDATE MANUALLY!
 type: application
 kubeVersion: ">=1.27.0-0"
-description: Helm Chart provided by IT Monitoring Service to install and configure required components to gather and send monitoring data from kubernetes clusters to central service.
+description: Helm Chart provided by the IT Monitoring Service to install and configure the required components to gather and send monitoring data from Kubernetes clusters to the central service.
 home: https://cern.ch/monitoring
 dependencies:
   - name: crds

README.md

 # cern-it-monitoring-kubernetes
 
-Helm Chart provided by IT Monitoring Service to install and configure required components to gather and send monitoring data from kubernetes clusters to central service.
+## Short description
 
-## Overview
+Helm Chart provided by the IT Monitoring Service to install and configure the required components to gather and send monitoring data from Kubernetes clusters to the central service.
+
+## Details
 
 The **CERN IT Monitoring Kubernetes Helm Chart** provides a solution
 for monitoring Kubernetes clusters at CERN. It enables the collection

README.md.gotmpl

 {{ template "chart.header" . }}
+
+## Short description
+
 {{ template "chart.description" . }}
 
-## Overview
+## Details
 
 The **CERN IT Monitoring Kubernetes Helm Chart** provides a solution
 for monitoring Kubernetes clusters at CERN. It enables the collection