Add doc for template polymorphism option and attributes.
Add doc for template polymorphism option and attributes.

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