fixed link to issue from project dashboard

app/helpers/dashboard_helper.rb

 module DashboardHelper
   def dashboard_feed_path(project, object)
     case object.class.name.to_s
-    when "Issue" then project_issues_path(project, project.issues.find(object.id))
+    when "Issue" then project_issue_path(project, project.issues.find(object.id))
     when "Grit::Commit" then project_commit_path(project, project.repo.commits(object.id).first)
     when "Note"
       then