Update testing.adoc > "@embeddedkafka Annotation with JUnit5" section (#2894)

* Update testing.adoc > "@embeddedkafka Annotation with JUnit5" section

* Fix typo.

---------

Co-authored-by: Gary Russell <[email protected]>

Author: Alchemik

spring-kafka-docs/src/main/antora/modules/ROOT/pages/testing.adoc

@@ -339,8 +339,8 @@ public class EmbeddedKafkaConditionTests {
 }
 ----
 
-A stand-alone (not Spring test context) broker will be created if the class annotated with `@EmbeddedBroker` is not also annotated (or meta annotated) with `ExtendedWith(SpringExtension.class)`.
-`@SpringJunitConfig` and `@SpringBootTest` are so meta annotated and the context-based broker will be used when either of those annotations are also present.
+A standalone broker (outside the Spring's TestContext) will be created unless a class annotated `@EmbeddedKafka` is also annotated (or meta-annotated) with `ExtendWith(SpringExtension.class)`.
+`@SpringJunitConfig` and `@SpringBootTest` are so meta-annotated and the context-based broker will be used when either of those annotations are also present.
 
 IMPORTANT: When there is a Spring test application context available, the topics and broker properties can contain property placeholders, which will be resolved as long as the property is defined somewhere.
 If there is no Spring context available, these placeholders won't be resolved.