docs/devel: Fix qtest paths and info about check-block in testing.rst

The qtests have recently been moved to a separate subdirectory, so
the paths that are mentioned in the documentation have to be adjusted
accordingly. And some of the iotests are now always run as part of
"make check", so this information has to be adjusted here, too.

Message-Id: <20200122134511.23806-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed