chore(README.md): enable hacktoberfest 2022 badge (#7476)

README.md

@@ -4,7 +4,7 @@
 
 [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome) 
 [![License: CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/) 
-<!-- [![Hacktoberfest 2021 stats](https://img.shields.io/github/hacktoberfest/2021/EbookFoundation/free-programming-books?label=Hacktoberfest+2021)](https://github.com/EbookFoundation/free-programming-books/pulls?q=is%3Apr+is%3Amerged+created%3A2021-10-01..2021-10-31) -->
+[![Hacktoberfest 2022 stats](https://img.shields.io/github/hacktoberfest/2022/EbookFoundation/free-programming-books?label=Hacktoberfest+2022)](https://github.com/EbookFoundation/free-programming-books/pulls?q=is%3Apr+is%3Amerged+created%3A2022-10-01..2022-10-31)
 
 </div>