[fix, i18n] plugins/wallabag: make a few overlooked strings translateable (#4408)
[fix, i18n] plugins/wallabag: make a few overlooked strings translateable (#4408)

Notified on the forum https://www.mobileread.com/forums/showthread.php?p=3787617#post3787617
koreader/koreader,Frenzie/koreader,pazos/koreader,mihailim/koreader,poire-z/koreader,mwoz123/koreader,NiLuJe/koreader,houqp/koreader,Hzj-jie/koreader,koreader/koreader,NiLuJe/koreader,Markismus/koreader,Frenzie/koreader,poire-z/koreader