Change http link to https link
change the to
@@ -152,7 +152,7 @@ Import a key pair
If you are using the Dashboard from a Windows computer, use PuTTYgen
to load the ``*.pem`` file and convert and save it as ``*.ppk``. For
more information see the `WinSCP web page for
- PuTTYgen <http://winscp.net/eng/docs/ui_puttygen>`__.
+ PuTTYgen <https://winscp.net/eng/docs/ui_puttygen>`__.
#. To make the key pair known to SSH, run the :command:`ssh-add` command.
