Use text ellipsis instead of three single dots for shortening

Co-authored-by: Karina Kwiatek <6197148+raccube@users.noreply.github.com>

app/helpers/application_helper/title_methods.rb

@@ -18,7 +18,7 @@ module ApplicationHelper::TitleMethods
     unless content.nil?
       content = strip_markdown(content)
       if content.length > 45
-        content = content[0..42] + "..."
+        content = content[0..42] + "…"
       end
       list.push content
     end

spec/helpers/application_helper/title_methods_spec.rb

@@ -28,7 +28,7 @@ describe ApplicationHelper::TitleMethods, :type => :helper do
     end
 
     it 'should cut content that is too long' do
-      expect(generate_title('A title', 'with', 'a' * 50)).to eq('A title with aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa... | Waschmaschine')
+      expect(generate_title('A title', 'with', 'a' * 50)).to eq('A title with aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa… | Waschmaschine')
     end
   end