This is an interesting question. I don't know if Microsoft puts out dates of when their documentation was reviewed, at least not publicly. But I recommend using the waybackmachine, to guess where what was edited:

1. Find the PowerAutomate connector's help page, using the "?" questionmark on the connectors action: Then click "Learn more" to land on that specific page.

2. Copy the URL and input it in the waybackmachine, like this following my example: https://web.archive.org/web/20250000000000*/https://learn.microsoft.com/en-us/connectors/webcontents

On the waybackmachine page, you'll get a few snapshots from the page. Maybe you can find what you're looking for over there?

But I think the better question would be: why is it that important to find a date when this is published? This is a technical forum: if it works, it works.