Merge pull request #25 from SashaChyrskyy/feature/add-return-type

Add return type declaration in EkreativeHealthCheckExtension to address Symfony update warning

src/Ekreative/HealthCheckBundle/DependencyInjection/EkreativeHealthCheckExtension.php

@@ -11,7 +11,7 @@
 
 class EkreativeHealthCheckExtension extends Extension
 {
-    public function load(array $configs, ContainerBuilder $container)
+    public function load(array $configs, ContainerBuilder $container): void
     {
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);