package/sysdig: fix C++ comment
Replace libjson by jsoncpp for C++ dependency which was wrongly added
by commit 74fc60a267341879ca71f8eaa64a80f5b5aaf78b
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>