Fixed some grammar and phrasing.

[hugovk]

This is hard to review because the newlines were removed.

Adding them back, here's a diff:

It moves a "the" inside a link, changes "Python itself" to "Python", changes italics to italics+bold.

These don't seem particularly important, I suggest closing this.

[hugovk]

@arion52 Please close this PR, we don't need LNNs.ipynb.