Fix typo in milestones empty state

Changelog: other

app/views/shared/empty_states/_milestones.html.haml

@@ -9,5 +9,5 @@
     .text-content
       %h4= s_('Milestones|Use milestones to track issues and merge requests over a fixed period of time')
       %p.state-description
-        = s_('Milestones|Organize issues and merge requests into a cohesive group, and set an optional start and due dates. %{learn_more_link}').html_safe % { learn_more_link: learn_more_link }
+        = s_('Milestones|Organize issues and merge requests into a cohesive group, and set optional start and due dates. %{learn_more_link}').html_safe % { learn_more_link: learn_more_link }
       = yield

locale/gitlab.pot

@@ -24166,7 +24166,7 @@ msgstr ""
 msgid "Milestones|Ongoing Issues (open and assigned)"
 msgstr ""
 
-msgid "Milestones|Organize issues and merge requests into a cohesive group, and set an optional start and due dates. %{learn_more_link}"
+msgid "Milestones|Organize issues and merge requests into a cohesive group, and set optional start and due dates. %{learn_more_link}"
 msgstr ""
 
 msgid "Milestones|Project Milestone"