Fix coverage badge in README

Author: dzikoysk

README.md

@@ -5,7 +5,7 @@
             <img src="https://github.com/javalin/javalin-routing-extensions/actions/workflows/gradle.yml/badge.svg" alt="CI" />
         </a>
         <a href="https://codecov.io/gh/dzikoysk/javalin-routing-extensions">
-            <img src="https://codecov.io/gh/dzikoysk/javalin-routing-extensions/branch/main/graph/badge.svg?token=eqL206FW98" alt="Coverage" />
+            <img src="https://codecov.io/gh/javalin/javalin-routing-extensions/branch/main/graph/badge.svg?token=eqL206FW98" alt="Coverage" />
         </a>
         <a>
             <img src="https://img.shields.io/maven-central/v/io.javalin.community.routing/routing-core" alt="Maven Central" />