[docs] Documentation sites are extremely slow

Hi, I'm not sure how long it has been like that, but when I tried to access the documentation yesterday, it took forever to load. And it is the same today, it takes several minutes to load any site, for example: https://docs.openstack.org/cinder/2025.2/admin/ I tried it from different networks, didn't make a difference. Is that a known issue? Thanks, Eugen