Minor language fixes

[scotthmurray]

Congratulations on publishing this fantastic project!

I found just a couple small typos in the text. I've suggested some fixes here, as well as a couple minor rephrasings for clarity.

👏 on this project!

[lennerd]

Dear @alignedleft,

thanks for your feedback! Happy you like the tutorial and sorry, it took me so long to answer.

I plan to work on the tutorial by the end of this year and will merge your fixes and suggestions by then. Stay tuned.

Thanks again!