* Use built-in Docusaurus tabs for the Helm and kubectl install methods
* Rename the Helm release to plugin-barman-cloud, matching the chart's README and making the rollout verification command work
* Drop --create-namespace: the operator prerequisite guarantees the namespace exists
* Give each method its own verification step and example output
Signed-off-by: Krypton <root@krypton.ninja>
Signed-off-by: danishedb <danish.khan@enterprisedb.com>
Co-authored-by: danishedb <danish.khan@enterprisedb.com>
