This adds the 'remaining' command to the documentation of 'git rerere'. This command was added in ac49f5ca (Feb 16 2011; Martin von Zweigbergk <firstname.lastname@example.org>) but it was never documented.
Touch up the other rerere commands to reduce noise.
First noticed by Vincent van Ravesteijn.
Signed-off-by: Phil Hord <email@example.com> Signed-off-by: Junio C Hamano <firstname.lastname@example.org>