Fix typo in configure (noticed by Jason).
Fix typo in configure (noticed by Jason).

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