Fix docs, evernote → exporter (#8158)
Fix docs, evernote → exporter (#8158)

Cf. https://github.com/koreader/koreader/pull/7983#issuecomment-908981240
koreader/koreader,Frenzie/koreader,poire-z/koreader,NiLuJe/koreader,koreader/koreader,NiLuJe/koreader,Frenzie/koreader,poire-z/koreader