Fix new rubocop warning

diff --git a/app/helpers/notifier_helper.rb b/app/helpers/notifier_helper.rb
index 2915a0880591b1e694db4a2d9c661756b1052af2..a696a3d9cd79a38394877192b06226189d3b3888 100644 (file)
--- a/app/helpers/notifier_helper.rb
+++ b/app/helpers/notifier_helper.rb
@@ -14,6 +14,7 @@ module NotifierHelper
       ),
       user_url(display_name, :host => SERVER_URL),
       :target => "_blank",
+      :rel => "noopener",
       :style => "text-decoration: none; color: #222"
     )
   end