[PUSHED/OBVIOUS] ensure help set print type gives the correct help.

[PUSHED/OBVIOUS] ensure help set print type gives the correct help.

Without this patch:
  (gdb) help set print type
  Generic command for setting how types print.

  List of show print type subcommands:

  show print type methods -- Set printing of methods defined in classes
  ...

With this patch:
  (gdb) h set print type
  Generic command for setting how types print.

  List of set print type subcommands:

  set print type methods -- Set printing of methods defined in classes
  ...