Update README.md

MitkoVtori · web-flow · commit 04909ee1f7f0 · 2023-03-16T14:53:50.000+02:00
diff --git a/OOP/README.md b/OOP/README.md
@@ -33,3 +33,4 @@
 | <a href="7.SOLID">SOLID</a> |
 | --------- |
 | <a href="7.SOLID/SOLID - Lab">SOLID</a> |
+| <a href="7.SOLID/SOLID - Exercise">Exercise: SOLID</a> |
