`hrr` definition map link is dead

[dsweber2]

For the covidcast docs here, this link is no longer live: https://hub.arcgis.com/datasets/fedmaps::hospital-referral-regions

[melange396]

the URL is in the code at:

delphi-epidata/docs/api/covidcast_geography.md

Line 24 in 651f1bf

[here](https://hub.arcgis.com/datasets/fedmaps::hospital-referral-regions). We

there are several versions of that page indexed by the wayback machine but none of them work, the earliest being: https://web.archive.org/web/20200515051336/https://hub.arcgis.com/datasets/fedmaps::hospital-referral-regions

do we have a decent replacement link that we could use instead? these might suffice, but its hard to know without information about what was at the dead link:

• https://www.arcgis.com/apps/View/index.html?appid=29e1ae8a63624a8b9cab8c92d7e46e90
• https://www.arcgis.com/home/item.html?id=46bf6790c4e0455e9379ee9769b1a5ab
• https://www.arcgis.com/home/item.html?id=46bf6790c4e0455e9379ee9769b1a5ab#data
• https://www.arcgis.com/home/item.html?id=46bf6790c4e0455e9379ee9769b1a5ab#visualize

[dsweber2]

Yeah I'm not really sure which is the right replacement.

• the first is from 2012
• The second one seems like the most likely candidate, since it's from 2020
• the third is probably internally useful but not the best as a reference for people trying to understand them
• actually the 4th might be better since it's the map from the 2nd