Dead Link to "Parallelizing Operations With Dependencies" by Stephen Toub

[csaunders-humi]

I don't want to do a drive-by pull request for something so small. I did a search and it takes me to this article which seems to be where Microsoft has archived this article.

https://learn.microsoft.com/en-us/archive/msdn-magazine/2009/april/parallelizing-operations-with-dependencies

If the above article is correct, the link on this line of the README needs to be updated.