Document conan.tools.gnu.is_mingw helper#4447

HYUEHFJKhfjklkej wants to merge 1 commit into

conan-io:develop2conan-io/docs:develop2from

HYUEHFJKhfjklkej:feature/15648-is-mingw-docsHYUEHFJKhfjklkej/conan-docs:feature/15648-is-mingw-docsCopy head branch name to clipboard