Fix support url in design management cta

app/views/projects/issues/_design_management.html.haml

@@ -10,6 +10,6 @@
           %p.center
             - requirements_link_url = help_page_path('user/project/issues/design_management', anchor: 'requirements')
             - requirements_link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: requirements_link_url }
-            - support_link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: EE::CUSTOMER_SUPPORT_URL }
+            - support_link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: support_url }
             - link_end = '</a>'.html_safe
             = s_("DesignManagement|To enable design management, you'll need to  %{requirements_link_start}meet the requirements%{requirements_link_end}. If you need help, reach out to our %{support_link_start}support team%{support_link_end} for assistance.").html_safe % { requirements_link_start: requirements_link_start, requirements_link_end: link_end, support_link_start: support_link_start, support_link_end: link_end }
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