[coqdoc] Simplify regex for identifiers in comments
[coqdoc] Simplify regex for identifiers in comments

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