Fix: link to projects file

Author: Mahdi Dibaiee

README.md

@@ -201,7 +201,7 @@ In order to show for everyone that you **successfully** finished a course, you s
 
 After finish a course, you should think about a **real world problem** that you can solve using the acquired knowledge in the course. You don't need to create a big project, but you must create something to **validate** and **consolidate** your knowledge, and also to show to the world that you are capable to create something useful with the concepts that you learned.
 
-The projects of all students will be listed in [this](https://github.com/open-source-society/help/blob/master/PROJECTS.md) file. Submit your project's information in that file after you conclude it.
+The projects of all students will be listed in [this](https://github.com/open-source-society/data-science/blob/master/PROJECTS.md) file. Submit your project's information in that file after you conclude it.
 
 **You can create this project alone or with other students!**