fix(shell/lean): add missing colon to 'A' option
fix(shell/lean): add missing colon to 'A' option

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