all, I just upgraded a few plugins on my WordPress website

Hi all,
I just upgraded a few plugins on my WordPress website (including WPMU DEV dashboard) and it has taken the whole website down. I am right in the middle of a marketing campaign so this is particularly bad timing. Please can you help me get it back up?

The message is: Briefly unavailable for scheduled maintenance. Check back in a minute.

The URL is http://40daysofprayer.com.au

I have a cPanel account.

Please help asap.

Thanks in advance,

Rod