Fix broken link in jira service

app/models/project_services/jira_service.rb

@@ -24,11 +24,10 @@ class JiraService < IssueTrackerService
   prop_accessor :title, :description, :project_url, :issues_url, :new_issue_url
   def help
-    issue_tracker_link =  help_page_path("integration", "external-issue-tracker")
-
-    line1 = "Setting `project_url`, `issues_url` and `new_issue_url` will "\
-    "allow a user to easily navigate to the Jira issue tracker. "\
-    "See the [integration doc](#{issue_tracker_link}) for details."
+    line1 = 'Setting `project_url`, `issues_url` and `new_issue_url` will '\
+    'allow a user to easily navigate to the Jira issue tracker. See the '\
+    '[integration doc](http://doc.gitlab.com/ce/integration/external-issue-tracker.html) '\
+    'for details.'
     line2 = 'Support for referencing commits and automatic closing of Jira issues directly '\
     'from GitLab is [available in GitLab EE.](http://doc.gitlab.com/ee/integration/jira.html)'