Fix description of change in intro semantics.
Fix description of change in intro semantics.

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