add markdown='"1" attribute to div (EbookFoundation#6692)

Author: Sync271

Diff for: README.md

@@ -3,7 +3,7 @@ This page is available as an easy-to-read website at [https://ebookfoundation.gi
 
 # List of Free Learning Resources In Many Languages
 
-<div align="center">
+<div align="center" markdown="1">
 
 [![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/)