[ci] [doc] Note about `create-overlays.sh`
[ci] [doc] Note about `create-overlays.sh`

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