Update tesseract data files URL (#6452)
Update tesseract data files URL (#6452)

Reported by @lescheck on Weblate.
Hzj-jie/koreader,koreader/koreader,poire-z/koreader,Frenzie/koreader,koreader/koreader,poire-z/koreader,Frenzie/koreader,NiLuJe/koreader,mwoz123/koreader,pazos/koreader,NiLuJe/koreader,Markismus/koreader