On sync errors, update the text "See below for errors"

See https://help.nextcloud.com/t/how-to-find-out-what-sync-errors/241482/3

If an sync error occurs other than caused by a file or folder the text "See below for errors" points the user in the wrong direction.

There probably isn´t anything shorter but this could be something:

- Check below, or in the logs
- Please check configuration or a message below

or something in that manner.