Updated link to new site. Not sure that it is the same content.

[lvdstam]

Hi,

while doing the Bob exercise, I came across this broken link. As it turns out the original site was shutdown https://www.snoyman.com/blog/2019/02/shutting-down-haskell-lang/ and the content moved. The content is also being reworked/edited, so maybe it doesn't cover the original purpose anymore.

[github-actions]

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