[seahorse] docs: Mark certificate page as a stub

[Ekaterina Gerasimova <egerasimov src gnome org>]

commit cbf82d0418a6395ed4c149e4c77af6e903b2f1d6
Author: Jim Campbell <jwcampbell gmail com>
Date:   Thu Aug 8 18:24:03 2013 -0500

    docs: Mark certificate page as a stub
    
    ..until certs get a re-designed ui

 ...-key.page => what-is-certificate-key.page.stub} |    0
 1 files changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/help/C/what-is-certificate-key.page b/help/C/what-is-certificate-key.page.stub
similarity index 100%
rename from help/C/what-is-certificate-key.page
rename to help/C/what-is-certificate-key.page.stub