Make title text match heading

We generally aim to keep page titles in sync with the main heading on
the page - this makes it easier for screen reader users to understand
what page they're on as they navigate through a form.

Author: DavidBiddle

config/locales/cy.yml

@@ -344,7 +344,7 @@ cy:
     archived:
       heading: Sorry, this service is no longer available
       service_unavailable: "“%{form_name}” has been archived and is no longer available."
-      title: Form archived
+      title: Sorry, this service is no longer available
     check_your_answers:
       agree_and_submit: Cytuno a chyflwyno
       declaration: Datganiad

config/locales/en.yml

@@ -344,7 +344,7 @@ en:
     archived:
       heading: Sorry, this service is no longer available
       service_unavailable: "“%{form_name}” has been archived and is no longer available."
-      title: Form archived
+      title: Sorry, this service is no longer available
     check_your_answers:
       agree_and_submit: Agree and submit
       declaration: Declaration

spec/views/forms/archived/show.html.erb_spec.rb

@@ -12,7 +12,7 @@
   end
 
   it "has the correct title" do
-    expect(view.content_for(:title)).to eq "Form archived - Archived form"
+    expect(view.content_for(:title)).to eq "Sorry, this service is no longer available - Archived form"
   end
 
   it "has the correct heading" do