Fix make sphinx failure
Fix make sphinx failure

ppedrot/coq,SkySkimmer/coq,SkySkimmer/coq,coq/coq,ejgallego/coq,silene/coq,JasonGross/coq,Zimmi48/coq,JasonGross/coq,Matafou/coq,ppedrot/coq,Zimmi48/coq,JasonGross/coq,gares/coq,coq/coq,JasonGross/coq,gares/coq,ejgallego/coq,ppedrot/coq,Matafou/coq,silene/coq,SkySkimmer/coq,SkySkimmer/coq,ppedrot/coq,gares/coq,gares/coq,coq/coq,gares/coq,silene/coq,ejgallego/coq,coq/coq,Matafou/coq,Zimmi48/coq,ppedrot/coq,ejgallego/coq,Zimmi48/coq