Merge pull request #17443 from agebhar1

* gh-17443:
  Fix JavaDoc within spring-boot-test-support

Closes gh-17443

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/system/OutputCapture.java

@@ -122,7 +122,7 @@ class OutputCapture implements CapturedOutput {
 	}
 
 	/**
-	 * A capture session that captures {@link System#out System.out} and {@link System#out
+	 * A capture session that captures {@link System#out System.out} and {@link System#err
 	 * System.err}.
 	 */
 	private static class SystemCapture {

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/system/OutputCaptureExtension.java

@@ -37,7 +37,7 @@ import org.junit.jupiter.api.extension.ParameterResolver;
  * argument to your test class constructor or test method:
  *
  * <pre class="code">
- * &#064;ExtendWith(OutputExtension.class)
+ * &#064;ExtendWith(OutputCaptureExtension.class)
  * class MyTest {
  *
  *     &#064;Test