test-suite: fix sed on OS X, does not handle +
test-suite: fix sed on OS X, does not handle +

ppedrot/coq,gares/coq,Ptival/coq,amintimany/coq,coq/coq,Matafou/coq,Ptival/coq,SkySkimmer/coq,amintimany/coq,SkySkimmer/coq,maximedenes/coq,ejgallego/coq,maximedenes/coq,JasonGross/coq,ppedrot/coq,letouzey/coq-wip,JasonGross/coq,william-lawvere/coq,ejgallego/coq,maximedenes/coq,ppedrot/coq,letouzey/coq-wip,Zimmi48/coq,silene/coq,ejgallego/coq,gares/coq,Zimmi48/coq,coq/coq,gares/coq,ppedrot/coq,ppedrot/coq,maximedenes/coq,Lionel-Rieg/coq,JasonGross/coq,Zimmi48/coq,letouzey/coq-wip,Zimmi48/coq,maximedenes/coq,coq/coq,coq/coq,JasonGross/coq,Lionel-Rieg/coq,william-lawvere/coq,letouzey/coq-wip,amintimany/coq,SkySkimmer/coq,Matafou/coq,silene/coq,silene/coq,gares/coq,ejgallego/coq,SkySkimmer/coq,letouzey/coq-wip,william-lawvere/coq,Lionel-Rieg/coq,Ptival/coq,gares/coq,Matafou/coq