Update failure issue comment

qa/qa/specs/features/browser_ui/4_verify/ci_variable/add_ci_variable_spec.rb

 # frozen_string_literal: true
 module QA
-  # Failure issue: https://gitlab.com/gitlab-org/quality/staging/issues/30
+  # Failure issue: https://gitlab.com/gitlab-org/quality/staging/issues/43
   context 'Verify', :quarantine do
     describe 'CI variable support' do
       it 'user adds a CI variable' do