Merge branch 'dz/3751-redirect-plans-to-pricing' into 'master'

Redirect CustomersDot /plans page to pricing

See merge request gitlab-org/gitlab!74091

lib/gitlab/saas.rb

@@ -38,7 +38,7 @@ module Gitlab
     end
 
     def self.about_pricing_url
-      "https://about.gitlab.com/pricing"
+      "https://about.gitlab.com/pricing/"
     end
 
     def self.about_pricing_faq_url

lib/gitlab/subscription_portal.rb

@@ -39,7 +39,7 @@ module Gitlab
     end
 
     def self.subscriptions_plans_url
-      "#{self.subscriptions_url}/plans"
+      Gitlab::Saas.about_pricing_url
     end
 
     def self.subscriptions_gitlab_plans_url

spec/lib/gitlab/subscription_portal_spec.rb

@@ -60,7 +60,7 @@ RSpec.describe ::Gitlab::SubscriptionPortal do
       :subscriptions_more_minutes_url    | 'https://customers.staging.gitlab.com/buy_pipeline_minutes'
       :subscriptions_more_storage_url    | 'https://customers.staging.gitlab.com/buy_storage'
       :subscriptions_manage_url          | 'https://customers.staging.gitlab.com/subscriptions'
-      :subscriptions_plans_url           | 'https://customers.staging.gitlab.com/plans'
+      :subscriptions_plans_url           | 'https://about.gitlab.com/pricing/'
       :subscriptions_instance_review_url | 'https://customers.staging.gitlab.com/instance_review'
       :subscriptions_gitlab_plans_url    | 'https://customers.staging.gitlab.com/gitlab_plans'
     end