Update README.md

MitkoVtori · web-flow · commit 7ac1420a9d65 · 2023-03-28T17:01:01.000+03:00
diff --git a/OOP/README.md b/OOP/README.md
@@ -48,3 +48,5 @@
 | <a href="A.Testing">Testing</a> |
 | -------------- |
 | <a href="A.Testing/Testing - Lab">Testing</a> |
+| <a href="A.Testing/Testing - Exercise">Exercise: Testing</a> |
+
