[seahorse] Fix instructions how to export private PGP/GPG key

[Andre Klapper <aklapper src gnome org>]

commit 12169608a06950ef9c4ac7ae8e82f5f6ed25cb41
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Feb 21 18:53:46 2021 +0100

    Fix instructions how to export private PGP/GPG key
    
    Fixes #220

 help/C/pgp-export.page | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/help/C/pgp-export.page b/help/C/pgp-export.page
index cc526279..6cc61fae 100644
--- a/help/C/pgp-export.page
+++ b/help/C/pgp-export.page
@@ -7,6 +7,7 @@
     <link type="guide" xref="index#pgp-keys"/>
 
     <revision pkgversion="3.9" date="2013-09-10" status="draft"/>
+    <revision pkgversion="40" date="2021-02-21" status="draft"/>
 
     <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
 
@@ -53,7 +54,6 @@
 
   </section>
 
-<!-- TODO: Wrong in 3.32, see https://gitlab.gnome.org/GNOME/seahorse/issues/220 -->
   <section id="private">
     <title>To export your private PGP key:</title>
 
@@ -71,7 +71,10 @@
        <guiseq><gui>Properties</gui><gui>Details</gui></guiseq>.</p>
       </item>
       <item>
-       <p>Press the <gui style="button">Export</gui> button.</p>
+       <p>Press the <gui style="button">Export to file</gui> button.</p>
+      </item>
+      <item>
+       <p>Select <gui style="menuitem">Export secret key</gui>.</p>
       </item>
       <item>
        <p>Choose a location for your keyfile, and press