fix tox.ini comment typos
fix tox.ini comment typos

nicoddemus/pytest,ddboline/pytest,The-Compiler/pytest,pytest-dev/pytest,txomon/pytest,davidszotten/pytest,tomviner/pytest,tomviner/pytest,markshao/pytest,The-Compiler/pytest,pfctdayelise/pytest,alfredodeza/pytest,hackebrot/pytest,rmfitzpatrick/pytest,Akasurde/pytest,tareqalayan/pytest,RonnyPfannschmidt/pytest,nicoddemus/pytest