Fix failing test

[gRegorLove]

The original test from #84 (and microformats/mf2py#62) was following a redirect from a short domain ensuring that the final domain was used to resolve relative URLs, by comparing the final URL of a photo in the post. The URL of the photo in that post changed, so this test started failing.

Updated the test to only check that the domain in the final photo URL is the one we expect.

Edit: this should fix the failing automated tests that I saw here: https://github.com/microformats/php-mf2/actions

[tantek]

This should be good enough to catch property value parsing, independent of redirects of final path.

Do we have an issue on how redirects should work?

I would have expected that parsers don't do any redirect processing because parsers should not need to retrieve any URLs in order to parse some HTML.

The client of a parser should be expected to handle any redirects of any URL properties, not the parser.