* commands/acpi.c (GRUB_MOD_INIT): Capitalise some words from help.
	* commands/efi/loadbios.c (GRUB_MOD_INIT): Capitalise BIOS.
	* commands/i386/pc/drivemap.c (GRUB_MOD_INIT): Remove space. Add
	full stop.
	* commands/loadenv.c (GRUB_MOD_INIT): Remove command name from
	summary. Gettextizze the strings.
	* commands/probe.c (grub_cmd_probe): Capitalise UUID and FS.
	* commands/xnu_uuid.c (GRUB_MOD_INIT): Capitalise XNU.
	* disk/loopback.c (grub_arg_options): Capitalise first letter. Add
	full stop.
	(GRUB_MOD_INIT): Remove command name from summary.
	* hello/hello.c (GRUD_MOT_INIT): Add missing full stop. Improve the
	summary.
	* loader/i386/bsd.c (grub_arg_option): Capitalise CDROM.
	* term/i386/pc/serial.c (options): Add full stops.
	(GRUB_MOD_INIT): Remove command name from the summary.