Fix epic url in roadmap spec

Update epic selector to contain relative path

qa/qa/ee/page/group/roadmap.rb

@@ -20,7 +20,7 @@ module QA
           def epic_present?(epic)
             uri = URI(epic.group.web_url)
             group_relative_url = uri.path
-            epic_href_selector = "a[href='#{group_relative_url}/-/epics/#{epic.iid}']"
+            epic_href_selector = "a[href*='#{group_relative_url}/-/epics/#{epic.iid}']"
 
             within_element(:roadmap_shell) do
               find("[data-qa-selector='epic_details_cell'] #{epic_href_selector}") &&