Fix docs (#6999)
Fix docs (#6999)

Follow-up to <https://github.com/koreader/koreader/pull/6973>
Frenzie/koreader,poire-z/koreader,poire-z/koreader,NiLuJe/koreader,pazos/koreader,koreader/koreader,koreader/koreader,NiLuJe/koreader,Frenzie/koreader,mwoz123/koreader,Markismus/koreader,Hzj-jie/koreader