doc/cli: make "dot repository" an independent bullet point

The way to spell the current repository with a '.' dot is
independent from how the pathspec allows globs expanded by Git.

Make them two separate bullet items in the enumeration.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>