Fix badge link

Author: brunoocasali

README.md

@@ -17,7 +17,7 @@
 <p align="center">
   <a href="https://badge.fury.io/rb/meilisearch"><img src="https://badge.fury.io/rb/meilisearch.svg" alt="Latest Stable Version"></a>
   <a href="https://github.com/meilisearch/meilisearch-ruby/actions"><img src="https://github.com/meilisearch/meilisearch-ruby/workflows/Tests/badge.svg" alt="Test"></a>
-  <a href="https://codecov.io/gh/meilisearch/meilisearch-ruby" >
+  <a href="https://app.codecov.io/gh/meilisearch/meilisearch-ruby/tree/main" >
     <img src="https://codecov.io/gh/meilisearch/meilisearch-ruby/branch/main/graph/badge.svg?token=9J7LRP11IR"/>
   </a>
   <a href="https://github.com/meilisearch/meilisearch-ruby/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT-informational" alt="License"></a>