Update README.md啊

[liuguozhu12]

啊

[koushikcs562]

My goal is to make sure the documentation is as helpful as possible for new and existing users of gettorbrowser. Specifically, I focused on reviewing and updating the key instructions or descriptive text, leading to the +4 and -3 lines of changes shown here.
Please take a look at the file changes and let me know if you have any feedback or if there are other areas of the README you think need attention!