Changed SF file release to use sftp instead of ftp

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2006 f882894a-f735-0410-b71e-b25c423dba1c

doc/RELEASING

@@ -23,10 +23,8 @@ tools/setup
 ./configure
 make dist
 
-ftp upload.sf.net
-anonymous/email
-bin
-cd /incoming
+sftp upload.sf.net
+cd uploads
 put file
 
 SF -> Submit News about release. Make sure it is called "Nagios Plugins" (with those caps)