Remove 'SYNOPSIS' from short help text

It takes some space and it looks like it
applies to the description too.

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

commands/cli/helptext.go

@@ -100,8 +100,6 @@ const shortHelpFormat = `USAGE:
 
 {{.Indent}}{{template "usage" .}}
 {{if .Synopsis}}
-SYNOPSIS
-
 {{.Synopsis}}
 {{end}}{{if .Description}}
 {{.Description}}