README: update ptb badge

Author: Astrako

README.md

@@ -17,7 +17,7 @@
 <p align="center">
 <a href="https://www.python.org/" alt="made-with-python"> <img src="https://img.shields.io/badge/made%20with-Python-1f425f.svg?style=flat&logo=python&color=blue" /> </a>
 <a href="https://github.com/Astrako/AstrakoBot" alt="Python supported versions"> <img src="https://img.shields.io/badge/python-3.6%20%7C%203.7%20%7C%203.8%20%7C%203.9%20%7C%203.10-blue" /> </a>
-<a href="https://github.com/Astrako/AstrakoBot" alt="pypi version"> <img src="https://img.shields.io/badge/pypi-v13.9-blue" /> </a>
+<a href="https://github.com/Astrako/AstrakoBot" alt="Ptb version"> <img src="https://img.shields.io/badge/pypi-v13.10-blue" /> </a>
 <a href="https://github.com/Astrako/AstrakoBot" alt="GitHub repo size"> <img src="https://img.shields.io/github/repo-size/Astrako/AstrakoBot" /> </a>
 <a href="https://github.com/Astrako/AstrakoBot/blob/master/LICENSE" alt="GPLv3 license"> <img src="https://img.shields.io/github/license/Astrako/AstrakoBot?style=flat&logo=github&color=success" /> </a>
 </p>