Update PushController.java

spring-mvc-simple/src/main/java/com/baeldung/spring/controller/push/PushController.java

@@ -11,9 +11,7 @@ public class PushController {
     @GetMapping(path = "/demoWithPush")
     public String demoWithPush(PushBuilder pushBuilder) {
         if (null != pushBuilder) {
-            pushBuilder.path("resources/logo.png")
-                .addHeader("Content-Type", "image/png")
-                .push();
+            pushBuilder.path("resources/logo.png").push();
         }
         return "demo";
     }
@@ -22,4 +20,4 @@ public class PushController {
     public String demoWithoutPush() {
         return "demo";
     }
-}
+}