documentation for git-rm

Hello! The documentation for git-rm at http://www.kernel.org/pub/software/scm/git/docs/git-rm.html says

EXAMPLES

git-rm Documentation/\*.txt

    Removes all *.txt files from the index that are under the
Documentation directory and any of its subdirectories. The files are not
removed from the working tree.

I think that this should say

git-rm --cached Documentation/\*.txt

?

Otherwise I don't see why it wouldn't remove the files from the working tree. If this is a documentation error, it could cause some bad problems for people who follow it.