changed reference from "dipoles*" to "dip*" in the parallel BN test in the tutorial
changed reference from "dipoles*" to "dip*" in the parallel BN test in the tutorial

Some versions of yambo call the databases "dipoles" others call it "dip”

alexmoratalla/yambo-py,henriquemiranda/yambo-py,alexmoratalla/yambopy,alexmoratalla/yambo-py,henriquemiranda/yambo-py,palful/yambopy,alexandremorlet/yambopy,henriquemiranda/yambopy,alexmoratalla/yambopy,palful/yambopy,henriquemiranda/yambopy,alexandremorlet/yambopy