MFC INDEX.keymaps fixes

MFC INDEX.keymaps fixes

r282898: Correct UTF-8 encoding in Británico

  One á was ISO 8859-1 0xE1 instead of UTF-8 0xC3 0xA1.

r282902: Correct language code -- "Danish" is English

  The menu entry "Danish ISO-8859-1 (macbook)" was first added to the
  syscons(4) INDEX.keymaps in r241851 with no language code, and then in
  r256367 incorrectly tagged with "da".  It is a Danish keyboard map, but
  the description is in English and therefore must be "en".

  This error subsequently propagated into the vt(4) INDEX.keymaps.

r282905: Restore 'he' language code for Hebrew kbdmap(1) menu title

r282914: kbdmap(1): Correct menu title: keyboards have a layout, not a language

PR:		146793, 193656

git-svn-id: svn://svn.freebsd.org/base/stable/10@283164 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f