[doc] Adjust conf.py to allow LaTeX builds
[doc] Adjust conf.py to allow LaTeX builds

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