modify CONTRIBUTING.md
modify CONTRIBUTING.md

tboox/xmake,waruqi/xmake,waruqi/xmake,tboox/xmake,tboox/xmake,waruqi/xmake,waruqi/xmake,tboox/xmake,waruqi/xmake,tboox/xmake,tboox/xmake,waruqi/xmake,tboox/xmake,waruqi/xmake