doc/cipher-negotiation.rst: avoid warning by fixing indentation

doc/cipher-negotiation.rst: avoid warning by fixing indentation

Indentation is wrong and triggers the following:

rst2man.py openvpn.8.rst > openvpn.8
man-sections/cipher-negotiation.rst:20: (WARNING/2) Definition list ends
without a blank line; unexpected unindent.
rst2man.py openvpn-examples.5.rst > openvpn-examples.5
rst2html.py openvpn.8.rst > openvpn.8.html
man-sections/cipher-negotiation.rst:20: (WARNING/2) Definition list ends
without a blank line; unexpected unindent.

Get rid of it.

Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <20220110144013.7233-1-a@unstable.cc>
URL: https://www.mail-archive.com/search?l=mid&q=20220110144013.7233-1-a@unstable.cc
Signed-off-by: Gert Doering <gert@greenie.muc.de>