Documentation: merge: move configuration section to end
Documentation: merge: move configuration section to end

Configuration and environment variables belong to the back matter
of a manual page.

Signed-off-by: Jonathan Nieder <b57189c5f2fd5b3daf3350a77fde90def1080fa5@gmail.com>
Acked-by: Petr Baudis <2df6472652419df7dced808d07835f28963a653f@suse.cz>
Signed-off-by: Thomas Rast <18f23ef7096473d837b7404952f13710423b8b63@student.ethz.ch>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git