[RFA 10/12] Update help text in record-btrace.c

[Pedro Alves]

On 04/30/2018 03:37 PM, Tom Tromey wrote:
> This updates the help text in record-btrace.c to conform to GNU
> standards.
> 
> 2018-04-29  Tom Tromey  <tom@tromey.com>
> 
> 	* record-btrace.c (_initialize_record_btrace): Update help text.

OK.

Thanks,
Pedro Alves