Fix grammar error in text about mentioned issues

app/views/projects/merge_requests/widget/_open.html.haml

@@ -42,6 +42,6 @@
         - if mr_issues_mentioned_but_not_closing.present?
           #{"Issue".pluralize(mr_issues_mentioned_but_not_closing.size)}
           != markdown issues_sentence(mr_issues_mentioned_but_not_closing), pipeline: :gfm, author: @merge_request.author
-          #{mr_issues_mentioned_but_not_closing.size > 1 ? 'are' : 'is'} mentioned but will not closed.
+          #{mr_issues_mentioned_but_not_closing.size > 1 ? 'are' : 'is'} mentioned but will not be closed.
          
 

spec/features/merge_requests/closes_issues_spec.rb

@@ -41,7 +41,7 @@ feature 'Merge Request closing issues message', feature: true do
     let(:merge_request_description) { "Description\n\nRefers to #{issue_1.to_reference} and #{issue_2.to_reference}" }
 
     it 'does not display closing issue message' do
-      expect(page).to have_content("Issues #{issue_1.to_reference} and #{issue_2.to_reference} are mentioned but will not closed.")
+      expect(page).to have_content("Issues #{issue_1.to_reference} and #{issue_2.to_reference} are mentioned but will not be closed.")
     end
   end
 
@@ -49,7 +49,7 @@ feature 'Merge Request closing issues message', feature: true do
     let(:merge_request_description) { "Description\n\ncloses #{issue_1.to_reference}\n\n refers to #{issue_2.to_reference}" }
 
     it 'does not display closing issue message' do
-      expect(page).to have_content("Accepting this merge request will close issue #{issue_1.to_reference}. Issue #{issue_2.to_reference} is mentioned but will not closed.")
+      expect(page).to have_content("Accepting this merge request will close issue #{issue_1.to_reference}. Issue #{issue_2.to_reference} is mentioned but will not be closed.")
     end
   end
 end