Revision 216966

MFC r211397:

Fix typos, spelling, formatting and mdoc mistakes found by Nobuyuki while
translating these manual pages.  Minor corrections by me.

Submitted by:   Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>

Reminded by the following
PR:             docs/153615
Submitted by:   Warren Block (wblock at wonkity dot com)