Merge branch 'dm-fix-typo-external-auth-help-text' into 'master'

Fix typo in external authorization URL help text

See merge request gitlab-org/gitlab-ee!5560

ee/app/helpers/ee/application_settings_helper.rb

@@ -15,7 +15,7 @@ def external_authorization_timeout_help_text
 
     def external_authorization_url_help_text
       _("When leaving the URL blank, classification labels can still be "\
-        "specified whitout disabling cross project features or performing "\
+        "specified without disabling cross project features or performing "\
         "external authorization checks.")
     end