Documentation: clarify quoting in gitignore docs
Documentation: clarify quoting in gitignore docs

An asterisk in "Documentation/*.txt" quoted with \ to avoid bold text
is being output as \* because asciidoc does not consider it a
candidate for escaping (there is no matching * to pair it with).

So the manual looks like it is saying that one should write
"Documentation/\*.txt" in the .gitignore file.

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