Man pages matching name xkballocgeomkeyaliases in section 3:

XkbAllocGeomKeyAliases.3.en	debian 10 / libx11-doc
XkbAllocGeomKeyAliases.3.en	debian 11 / libx11-doc
XkbAllocGeomKeyAliases.3.en	debian 12 / libx11-doc