Fix formatting of material link in README

Author: DininduSenanayake

README.md

@@ -1,6 +1,8 @@
 <h1 align="center">The Basics Of Python Packaging</h1>
 
-<center>Material : https://kir-rescomp.github.io/training-basics-python-packaging/</center>
+<p align="center">
+Material : https://kir-rescomp.github.io/training-basics-python-packaging/
+</p>
 
 <p align="center">
     <img src="./docs/images/python_packaging.png" alt="drawing" width="300">