ghostsquad57 [1] filed a deletion request for libreoffice-still-en-us- help [2]:

Files provided by this package are now provided by libreoffice-* packages.

[1] https://aur.archlinux.org/account/ghostsquad57/ [2] https://aur.archlinux.org/pkgbase/libreoffice-still-en-us-help/