add override annotation for Specification child class

spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/annotation/LoadBalancerClientSpecification.java

@@ -42,6 +42,7 @@ public class LoadBalancerClientSpecification implements NamedContextFactory.Spec
 		this.configuration = configuration;
 	}
 
+	@Override
 	public String getName() {
 		return this.name;
 	}
@@ -51,6 +52,7 @@ public class LoadBalancerClientSpecification implements NamedContextFactory.Spec
 		this.name = name;
 	}
 
+	@Override
 	public Class<?>[] getConfiguration() {
 		return this.configuration;
 	}