Staging: speakup: speakup_bns: fix comment

Fixed comment formatting issue.
Signed-off-by: NVitali Liaukovich <vitali.liaukovich@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/speakup/speakup_bns.c

 /*
  * originally written by: Kirk Reiser <kirk@braille.uwo.ca>
-* this version considerably modified by David Borowski, david575@rogers.com
+ * this version considerably modified by David Borowski, david575@rogers.com
  *
  * Copyright (C) 1998-99  Kirk Reiser.
  * Copyright (C) 2003 David Borowski.