Swap M3 Assignment Data

[sokjc]

From @KeriKalmbach:

We really need to re-engineer module 3's assignment. I know we work with arrays, so the feature names aren’t shared. But, it makes sense that they’ll need the feature names to make a meaningful interpretation of the data and to meet the data engineering assignment requirement.

• Replace the Module 3 Assignment Regression Data with NYC Rent or another dataset.