A mistake in Video 3 on Topic Modeling + in Readme.MD

[AlxndrMlk]

Hi Rachel,

first of all thank you for the amazing content! <3

I noticed that in the video(s) on topic modeling with SVD and NMF you talk about Topic Frequency-Inverse Document Frequency (TF-IDF)

To my best knowledge TF-IDF stands for Term instead of Topic Frequency-Inverse Document Frequency. I thought it might be confusing for some people, so I decided to raise an issue here.

Thanks!

Best, Aleksander