Update README.md

README.md

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 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=for-the-badge&logo=github)](http://makeapullrequest.com)
 [![Awesome Humane Tech](https://raw.githubusercontent.com/humanetech-community/awesome-humane-tech/main/humane-tech-badge.svg?sanitize=true)](https://github.com/humanetech-community/awesome-humane-tech)
 
-**A forever evolving, professional microblogging platform.**
+**A forever evolving, interplanetary microblogging platform.**
 
 <p align="justify">
 <a href="https://join.misskey.page/">Misskey</a> is a decentralized microblogging platform born on Earth.