Apologies for tomorrow's Profling TF meeting

Apologies to all those attending the Profiling TF meeting tomorrow, I will be unable to attend - I'll be on leave.

I don't have anything to update about, other than that I've address comments in PR #549 - mostly accepting good edits - and merged it. It's content is now in https://w3c.github.io/data-shapes/shacl12-profiling/.

Please do meet as it may be a good opportunity for the avoidance of potential groupthink for you to discuss profiling without me.

Cheers, Nick