tipc: fix misalignment printout in non-JSON output

tipc: fix misalignment printout in non-JSON output

In the commit 1304f50a5be0ed ("tipc: JSON support for showing nametable"),
introduced misalignment in the columns of the printout in non-JSON mode
compare to the list header. Add one space per column to make alignment
with the list header.

before:
$tipc name show
Type       Lower      Upper      Scope    Port       Node
1         1         1         node    4071367628

after:
$tipc name show
Type       Lower      Upper      Scope    Port       Node
1          1          1          node     4071367628

Reported-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>