Update brand terminology

versioned_sidebars/version-2.5-sidebars.json

@@ -31,7 +31,7 @@
           "items": [
             {
               "type": "category",
-              "label": "Deploy Rancher Manager",
+              "label": "Deploy Rancher",
               "link": {
                 "type": "doc",
                 "id": "pages-for-subheaders/deploy-rancher-manager"
@@ -834,7 +834,7 @@
            },
            {
               "type": "category",
-              "label": "Rancher Manager Architecture",
+              "label": "Rancher Architecture",
               "link": {
                 "type": "doc",
                 "id": "pages-for-subheaders/rancher-manager-architecture"