added small comment about using ssh in the faq
added small comment about using ssh in the faq

svn path=/trunk/kdenetwork/doc/kmail/; revision=58725

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi