Update doc/en/mark.rst
Update doc/en/mark.rst

Co-Authored-By: Zac-HD <841d79aa807bedbb1e8c5fd2a0579c6ab3dd0808@users.noreply.github.com>
Akasurde/pytest,The-Compiler/pytest,RonnyPfannschmidt/pytest,alfredodeza/pytest,nicoddemus/pytest,tomviner/pytest,nicoddemus/pytest,pytest-dev/pytest,The-Compiler/pytest,markshao/pytest,tomviner/pytest