Help link for WebDAV page

Source commit: fb043d95f848c46395ec8e938feb63789ffd7d82

source/forms/SiteAdvanced.dfm

@@ -1100,6 +1100,8 @@ object SiteAdvancedDialog: TSiteAdvancedDialog
       end
       object WebDavSheet: TTabSheet
         Tag = 2
+        HelpType = htKeyword
+        HelpKeyword = 'ui_login_webdav'
         Caption = 'WebDAV'
         ImageIndex = 17
         TabVisible = False