Update man pages to time(1) from time(2)

zpool-iostat.8: Updated time(2) -> time(1) to align to manual page
zpool-list.8: Updated time(2) -> time(1) to align to manual page
zpool-status.8: Updated time(2) -> time(1) to align to manual page
zpool-wait.8: Update time(2) -> time(1) to align to manual page

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Christopher Davidson <christopher.davidson@gmail.com>
Closes #15823