mm,thp: fix sloppy text output

Three independent trivial patches, fixing sloppy text output which has
annoyed me; but might risk surprising a parser, so any can be dropped.

1/3 mm,thp: no space after colon in Mem-Info fields
2/3 mm,thp: fix nodeN/meminfo output alignment
3/3 mm,thp: fix smaps THPeligible output alignment

 drivers/base/node.c                          | 4 ++--
 fs/proc/task_mmu.c                           | 2 +-
 mm/show_mem.c                                | 6 +++---
 tools/testing/selftests/proc/proc-empty-vm.c | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

Hugh