Documentation: remove stray backslashes in rev-parse manual
Documentation: remove stray backslashes in rev-parse manual

Use the {asterisk} entity instead of \* or * to avoid both
stray backslashes in output and suppression of asterisks
misinterpreted as a bold-text delimiter.

Reported-by: Frédéric Brière <138584a8b44c8500926cbe73211e2823dae3b65e@fbriere.net>
Signed-off-by: Jonathan Nieder <b57189c5f2fd5b3daf3350a77fde90def1080fa5@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

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