Update README.md

Author: MitkoVtori

OOP/README.md

@@ -56,5 +56,10 @@
 | ---------------- |
 | <a href="C.Exam Preparation">Exam Preparation</a> |
 | ------------------------- |
-| <a href="C.Exam Preparation/Python OOP Exam - 10 December 2022">Python OOP Exam - 10 December 2022</a>
-| <a href="C.Exam Preparation/Python OOP Retake Exam - 19 December 2022">Python OOP Retake Exam - 19 December 2022</a>
+| <a href="C.Exam Preparation/Python OOP Exam - 10 December 2022">Python OOP Exam - 10 December 2022</a> |
+| <a href="C.Exam Preparation/Python OOP Retake Exam - 19 December 2022">Python OOP Retake Exam - 19 December 2022</a> |
+| ---------------------------------------- |
+| <a href="D.Workshop">Workshop</a> |
+| ---------------- |
+| <a href="D.Workshop/hashmap">hashmap</a> |
+| <a href="D.Workshop/inventory">inventory</a> |