feat: add Scaler Topics data science course (#3)

Author: Vishal Kumar

README.md

@@ -142,6 +142,7 @@ The following websites feature some of the best resources available online for l
 - [Learning From Data](https://work.caltech.edu/telecourse.html) - Yaser Abu-Mostafa, Caltech
 - [Programming with Python for Data Science](https://www.edx.org/course/programming-with-python-for-data-science) - Microsoft
 - [Kaggle](https://www.kaggle.com/) - Data Science competitions
+- [Data Science Tutorial](https://www.scaler.com/topics/data-science/)
 
 ## Artificial Intelligence
 * [Elements of AI](https://www.elementsofai.com/)