9842 man page typos and spelling

*** 96,106 ****
  .Pq if not already loaded .
  After which you can use the
  .Ic boot
  or
  .Ic autoboot
! commmands or simply exit (provided
  .Va autoboot_delay
  is not set to NO) to boot the system.
  .Ic start
  is the command used in the default
  .Pa /boot/loader.rc
--- 96,106 ----
  .Pq if not already loaded .
  After which you can use the
  .Ic boot
  or
  .Ic autoboot
! commands or simply exit (provided
  .Va autoboot_delay
  is not set to NO) to boot the system.
  .Ic start
  is the command used in the default
  .Pa /boot/loader.rc