Update EventLoaderTest.java

escaped quotes in JSON

Author: ShashankAWS

aws-lambda-java-tests/src/test/java/com/amazonaws/services/lambda/runtime/tests/EventLoaderTest.java

@@ -125,7 +125,7 @@ public void testLoadMSKFirehoseEvent() {
         assertThat(event).isNotNull();
         assertThat(event.getDeliveryStreamArn()).isEqualTo("arn:aws:kinesis:EXAMPLE");
         assertThat(event.getRecords()).hasSize(1);
-        assertThat(event.getRecords().get(0).getKafkaRecordValue().array()).asString().isEqualTo("{"Name":"Hello World"}");
+        assertThat(event.getRecords().get(0).getKafkaRecordValue().array()).asString().isEqualTo("{\"Name\":\"Hello World\"}");
     }
 
     @Test