Merge pull request #16 from PinnLabs/documentation

update documentation

Author: castroofelipee

README.md

@@ -1,7 +1,11 @@
 <p align="center">
   <img src="./public/logo.png" alt="Venvalid logo" width="200"/>
 </p>
-<a align="center" href="https://pepy.tech/projects/venvalid"><img src="https://static.pepy.tech/badge/venvalid" alt="PyPI Downloads"></a>
+<p align="center">
+  <a href="https://pepy.tech/projects/venvalid">
+    <img src="https://static.pepy.tech/badge/venvalid" alt="PyPI Downloads">
+  </a>
+</p>
 <p align="center">Minimalist environment variable validation for Python, inspired by <a href="https://github.com/af/envalid">envalid</a></p>
 
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