chore(emacs/lean-syntax): add register_simp_ext to list of keywords
chore(emacs/lean-syntax): add register_simp_ext to list of keywords

avigad/lean,Kha/lean,rlewis1988/lean,leodemoura/lean,fpvandoorn/lean,johoelzl/lean,Kha/lean,fpvandoorn/lean,soonhokong/lean-osx,leodemoura/lean,Kha/lean,johoelzl/lean,soonhokong/lean-osx,dselsam/lean,leodemoura/lean,leanprover/lean,leanprover/lean,digama0/lean,johoelzl/lean,johoelzl/lean,soonhokong/lean-osx,soonhokong/lean-windows,rlewis1988/lean,johoelzl/lean,digama0/lean,soonhokong/lean-windows,soonhokong/lean-windows,rlewis1988/lean,dselsam/lean,leodemoura/lean,leanprover-community/lean,soonhokong/lean-osx,leanprover-community/lean,leanprover-community/lean,soonhokong/lean-windows,leanprover-community/lean,leanprover/lean,avigad/lean,leodemoura/lean,fgdorais/lean,soonhokong/lean-osx,avigad/lean,Kha/lean,soonhokong/lean-windows,digama0/lean,fgdorais/lean,dselsam/lean,dselsam/lean,leanprover-community/lean,leodemoura/lean,avigad/lean,leanprover-community/lean,dselsam/lean,fpvandoorn/lean,digama0/lean,leanprover/lean,fgdorais/lean,leanprover/lean,fpvandoorn/lean,digama0/lean,rlewis1988/lean,rlewis1988/lean,fpvandoorn/lean,fgdorais/lean,dselsam/lean,rlewis1988/lean,Kha/lean,fpvandoorn/lean,avigad/lean,Kha/lean,digama0/lean,fgdorais/lean,avigad/lean,leanprover/lean,fgdorais/lean,johoelzl/lean