fixing test chapter

Ducasse · Ducasse · commit 49a7dbf1b1fc · 2025-01-22T21:27:53.000+01:00
diff --git a/Chapters/Tests/Tests.md b/Chapters/Tests/Tests.md
@@ -33,9 +33,7 @@ Here the class `MyExampleSetTest` should inherit from `TestCase`. It is the plac
 related to the class `Set`. 
 
 ```
-TestCase subclass: #MyExampleSetTest
-	instanceVariableNames: ''
-	classVariableNames: ''
+TestCase << #MyExampleSetTest
 	package: 'MySetTest'
 ```
 
