Fix CODEOWNERS after move of Ltac2 OCaml code.
Fix CODEOWNERS after move of Ltac2 OCaml code.

ejgallego/coq,coq/coq,ejgallego/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,Zimmi48/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,Zimmi48/coq,ejgallego/coq,ejgallego/coq,coq/coq,SkySkimmer/coq,SkySkimmer/coq