Plugins: Enable catalog management link to gcom (#34673)

* click out to gcom when config enabled

* set to false

* fix styling for uninstall

* remove advertising config + simplify callout URL

* add entry to configuration.md

* update config name

* update lingo

packages/grafana-runtime/src/config.ts

@@ -76,6 +76,7 @@ export class GrafanaBootConfig implements GrafanaConfig {
   };
   pluginCatalogURL = 'https://grafana.com/grafana/plugins/';
   pluginAdminEnabled = false;
+  pluginAdminExternalManageEnabled = false;
   expressionsEnabled = false;
   customTheme?: any;
   awsAllowedAuthProviders: string[] = [];