Amend translations for identifier edit view [skip ci]

config/locales/en.yml

@@ -1350,9 +1350,9 @@ en:
       subprojects_confirmation: "Its subproject(s): %{value} will also be deleted."
       title: "Delete the project %{name}"
     identifier:
-      warning_one: Members of the project will have to relocate the project's repositories
+      warning_one: Members of the project will have to relocate the project's repositories.
-      warning_two: Existing links to the project will no longer work
+      warning_two: Existing links to the project will no longer work.
-      title: "Change the project's identifier"
+      title: Change the project's identifier
 
   project_module_activity: "Activity"
   project_module_boards: "Forums"

spec/features/projects/projects_spec.rb

@@ -132,7 +132,7 @@ describe 'Projects', type: :feature do
       click_on project.name
       click_on 'Edit'
 
-      expect(page).to have_content "DO YOU REALLY WANT TO CHANGE THE PROJECT'S IDENTIFIER"
+      expect(page).to have_content "CHANGE THE PROJECT'S IDENTIFIER"
       expect(current_path).to eq '/projects/foo/identifier'
 
       fill_in 'project[identifier]', with: 'foo-bar'