chore(i18n): Improve grammar

Fixes #6408 

Reported at Transifex.

Signed-off-by: rakekniven <2069590+rakekniven@users.noreply.github.com>

src/libsync/updatee2eefolderusersmetadatajob.cpp

@@ -115,7 +115,7 @@ void UpdateE2eeFolderUsersMetadataJob::slotFetchMetadataJobFinished(int statusCo
     }
 
     if (!_encryptedFolderMetadataHandler->folderMetadata() || !_encryptedFolderMetadataHandler->folderMetadata()->isValid()) {
-        emit finished(403, tr("Could not add or remove a folder user %1, for folder %2").arg(_folderUserId).arg(_fullRemotePath));
+        emit finished(403, tr("Could not add or remove user %1 to access folder %2").arg(_folderUserId).arg(_fullRemotePath));
         return;
     }
     startUpdate();