Update README.md

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Author: JessicaVakili

README.md

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 This repository accompanies [Reinforcement Learning for Sequential Decision and Optimal Control](https://www.link.springer.com/book/10.1007/9789811977831) by Shengbo Eben Li(SpringerNature, 2024).
 
 [comment]: #cover
-![Cover image]9789811977831.jpg)
+[Cover image]9789811977831.jpg)
 
 Download the files as a zip using the green button, or clone the repository to your machine using Git.