[evolution] help: Import instructions for Thunderbird might not work anymore

[Andre Klapper <aklapper src gnome org>]

commit 67bd35933f04ded6332f09f07a7f6552dfd83a8b
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 22 15:37:20 2020 +0100

    help: Import instructions for Thunderbird might not work anymore

 help/C/import-apps-mozilla.page | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/help/C/import-apps-mozilla.page b/help/C/import-apps-mozilla.page
index feb4552429..3fb5895805 100644
--- a/help/C/import-apps-mozilla.page
+++ b/help/C/import-apps-mozilla.page
@@ -21,6 +21,10 @@
 <!-- <guiseq><gui>File</gui><gui>Import</gui><gui>Import data and settings from older 
programs</gui></guiseq> does NOT recognize Outlook and Thunderbird automatically in 3.8." -->
 <!-- TODO: Check https://bugzilla.gnome.org/show_bug.cgi?id=214858 occasionally (Thunderbird automatic mail 
import) -->
 <!-- TODO: Check https://bugzilla.gnome.org/show_bug.cgi?id=559266 occasionally (Thunderbird mailfilter 
importer) -->
+
+<!-- TODO: Fix this page properly and find time to try: -->
+<note style="warning"><p>The instructions below might be outdated and not work anymore.</p><p>Follow <link 
href="https://mail.gnome.org/archives/evolution-list/2019-February/msg00055.html";>this mailing list 
posting</link> for an alternative method that you could try.</p></note>
+
 <steps>
 <item><p><link href="https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data";>Find 
your <app>Thunderbird</app> profile folder.</link></p></item>
 <item><p>Click <guiseq><gui>File</gui><gui>Import</gui></guiseq>.</p></item>