Cirrussearch-didyoumean-settings

Hi!

Can you please update MediaWiki:Cirrussearch-didyoumean-settings/vi?

It needs two things:

1. Two spaces before the # character in the beginning. I'd do it myself, but I don't want to do it without also doing number 2:
2. Updates in the "confidence" section. You can easily see the changes in the English message. Perhaps no updates at all are needed in the Vietnamese message, but it's better if you check it :)

Thank you!

 Done