The page was moved from The Dark Pictures Anthology: Man of Medan to Man of Medan to remove the series name of the name and to match visitors expectations in what they would search for the most to arrive to the page. Fewer would type "The Dark Pictures Anthology: Man of Medan" than type "Man of Medan".
It was also to improve the overall look of the series page, as this is just honestly stupid: https://images.aemony.se/sharex/firefox_2019-09-12_06-36-56.png
I've moved the page back to reside under "Man of Medan" primarily again, but added the title parameter to the infobox game so that the full official title is still present there on the page, to match other times this have been done on PCGW.