rule: print space between policy and timeout

rule: print space between policy and timeout

 table ip filter {
        ct timeout agressive-tcp {
		...
                policy = { established : 100, close_wait : 4, close : 4 }
                                      ^ ^               ^ ^        ^ ^

for consistency with map syntax.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>