[PATCH] PATCH Documentation/git-rev-list.txt typo fix

[PATCH] PATCH Documentation/git-rev-list.txt typo fix

An earlier commit causes a mismatch in <emphasis> and <superscript>
tags, one way of fixing it is having no more than one caret symbol per
line, which is the only solution I found in the asciidoc
documentation. Ugly, but it works.

[jc: ugly indeed but that is not Peter's fault.]

Signed-off-by: Peter Hagervall <hager@cs.umu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>