Change wording in wallet password warning popup

[w0000000t]

Following a question on Bisq telegram group, I would like to address the above dialogue.
The user (rightly so in my opinion) asked if it is actually recommendable to make a backup "in the clear" of the data directory before adding a password to the wallet.
I think it is actually best to advise users to backup their Bisq seed to pencil on paper, but not to keep any form of digital backup of the seed in the clear, so the new content I propose for this dialogue is:

Please note that... [this first sentence stays unchanged]

Write down your seed words before encrypting the wallet, otherwise you won't be able to recover your funds if you forget the password.