Replace data set used in one of the PCA Visualization examples of the docs

[Coding-with-Adam]

hi @LiamConnors We need to update the following example to use a different data set: Visualize a subset of the principal components. If you load the page, you will see an alert about the boston dataset not be ethical.

Function load_boston is deprecated; load_boston is deprecated in 1.0 and will be removed in 1.2. The Boston housing prices dataset has an ethical problem. You can refer to the documentation of this function for further details.