Fix copy-n-paste error in JRE enum Javadoc

sbrannen · sbrannen · commit b72d1f64f37c · 2023-07-03T20:02:50.000+02:00
diff --git a/junit-jupiter-api/src/main/java/org/junit/jupiter/api/condition/JRE.java b/junit-jupiter-api/src/main/java/org/junit/jupiter/api/condition/JRE.java
@@ -139,7 +139,7 @@ public enum JRE {
 	JAVA_20,
 
 	/**
-	 * Java 20.
+	 * Java 21.
 	 *
 	 * @since 5.9.2
 	 */
