[seahorse] docs: Link to page covering how to revoke keys

[Andre Klapper <aklapper src gnome org>]

commit e71b79ab9321aed59eec38c36c30e22b3982f4bf
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Feb 21 19:25:46 2021 +0100

    docs: Link to page covering how to revoke keys

 help/C/pgp-delete.page | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/pgp-delete.page b/help/C/pgp-delete.page
index edc37133..9497612c 100644
--- a/help/C/pgp-delete.page
+++ b/help/C/pgp-delete.page
@@ -51,8 +51,8 @@
         be permanently deleted, even though your public key can still be
         <link xref="pgp-retrieve-remote">retrieved</link>
         from a key server and used to encrypt messages to you that you won't be
-        able to read! To prevent such a key from being used, retrieve and revoke
-        the key. <!--TODO add link on how to revoke from GUI-->
+        able to read! To prevent such a key from being used, retrieve and
+        <link xref="subkeys-revoke">revoke</link> the key.
         The revoked key can then be
         <link xref="pgp-sync">synced</link> with a key server to prevent people
         from retrieving and using it.</p>