translate chinese strings:

    # game/scripts/gui/about.rpy:18
    old "About"
    new "关于"
    # game/scripts/gui/about.rpy:35
    old "Made with {a=https://www.renpy.org/}Ren'Py{/a} [renpy.version_only].\n\n[renpy.license!t]"
    new "制作由 {a=https://www.renpy.org/}Ren'Py{/a} [renpy.version_only].\n\n[renpy.license!t]"