docs: replace palette control plane with management plane in pcg diag… (

#2925) (#2940)

* docs: replace palette control plane with management plane in pcg diagrams

* Optimised images with calibre/image-actions

* Optimised images with calibre/image-actions

---------

Co-authored-by: vault-token-factory-spectrocloud[bot] <133815545+vault-token-factory-spectrocloud[bot]@users.noreply.github.com>
(cherry picked from commit d8160ad)

Co-authored-by: caroldelwing <carolina.delwing@spectrocloud.com>

docs/docs-content/clusters/pcg/architecture.md

@@ -14,9 +14,9 @@ in a private network that blocks connections originating externally. The PCG con
 endpoint, allowing you to target the environment when deploying clusters in Palette.
 
 When installed, the PCG registers with the self-hosted or SaaS Palette instance you specify, enabling secure
-communication between the Palette control management plane and the private cloud environment. The PCG enables the
-deployment and removal of Kubernetes clusters in private cloud environments through the Palette user interface, API,
-CLI, or Terraform provider.
+communication between the Palette management plane and the private cloud environment. The PCG enables the deployment and
+removal of Kubernetes clusters in private cloud environments through the Palette user interface, API, CLI, or Terraform
+provider.
 
 ![An architecture diagram of PCG](/clusters_pcg_architecture_overview_diagram.webp)
 

docs/docs-content/clusters/pcg/deploy-app-pcg.md

@@ -8,7 +8,7 @@ hide_table_of_contents: false
 toc_min_heading_level: 2
 toc_max_heading_level: 2
 sidebar_position: 50
-tags: ["pcg"]
+tags: ["pcg", "tutorial"]
 ---
 
 Palette Private Cloud Gateway (PCG) is a crucial infrastructure support component that acts as a bridge between your