docs: general changes to Cloud docs (#13616)

* docs: document self serve

* docs: Cloud docs changes

* vale fixes

* vale error fix

* fixes

* added new sections

* generate

www/apps/cloud/generated/sidebar.mjs

@@ -18,6 +18,14 @@ export const generatedSidebars = [
             "title": "Introduction",
             "children": []
           },
+          {
+            "loaded": true,
+            "isPathHref": true,
+            "type": "link",
+            "path": "/sign-up",
+            "title": "Sign Up",
+            "children": []
+          },
           {
             "loaded": true,
             "isPathHref": true,
@@ -25,6 +33,14 @@ export const generatedSidebars = [
             "path": "/faq",
             "title": "FAQ",
             "children": []
+          },
+          {
+            "loaded": true,
+            "isPathHref": true,
+            "type": "link",
+            "path": "/comparison",
+            "title": "Cloud vs Self Hosting",
+            "children": []
           }
         ]
       },