Fix typo in error message
Fix typo in error message

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@16745 85f007b7-540e-0410-9357-904b9bb8a0f7

herbelin/github-coq,Ptival/coq,ejgallego/coq,Zimmi48/coq,letouzey/coq-wip,shindere/coq,asr/coq,ejgallego/coq,gares/coq,TOSPIO/coq,amintimany/coq,pirapira/coq2rust,pirbo/coq,aspiwack/coq,ppedrot/coq,ppedrot/coq,JasonGross/coq,ale-f/coq,asr/coq,Matafou/coq,william-lawvere/coq,Lionel-Rieg/coq,silene/coq,asr/coq,JasonGross/coq,pirapira/coq2rust,SkySkimmer/coq,silene/coq,ale-f/coq,mattam82/coq,herbelin/github-coq,TheTypoMaster/coq,ppedrot/coq,gares/coq,maximedenes/coq,barras/coq,mattam82/coq,jpdeplaix/coq,gmalecha/coq,Ptival/coq,Matafou/coq,SkySkimmer/coq,TheTypoMaster/coq,maximedenes/coq,ale-f/coq,ejgallego/coq,pirapira/coq2rust,ejgallego/coq,silene/coq,herbelin/github-coq,SkySkimmer/coq,coq/coq,Lionel-Rieg/coq,letouzey/coq-wip,SkySkimmer/coq,Zimmi48/coq,8l/coq,gmalecha/coq,letouzey/coq-wip,maximedenes/coq,coq/coq,coq/coq,ppedrot/coq,shindere/coq,JasonGross/coq,william-lawvere/coq,william-lawvere/coq,barras/coq,gares/coq,aspiwack/coq,TOSPIO/coq,maximedenes/coq,gmalecha/coq,barras/coq,Zimmi48/coq,pirbo/coq,maximedenes/coq,amintimany/coq,mattam82/coq,mlasson/coq,mlasson/coq,TOSPIO/coq,TheTypoMaster/coq,gares/coq,shindere/coq,jpdeplaix/coq,letouzey/coq-wip,JasonGross/coq,8l/coq,amintimany/coq,aspiwack/coq,coq/coq,mlasson/coq,Lionel-Rieg/coq,pirbo/coq,jpdeplaix/coq,8l/coq,letouzey/coq-wip,ppedrot/coq,Ptival/coq,Zimmi48/coq,gares/coq,Matafou/coq