I spilled my coffee and I think maybe some part is inside of Iphone... will it be okay after drying 30minutes?

I spilled my coffee and I think maybe some coffee is inside of my Iphone.. when I charged, it showed me lightening connector liquid detecting message. I hope it's not a serious problem.

When I googled, the instruction says I wait 30 minutes then try again to see it's all dried..

I would like to know if the message doesn't appear anymore, iPhone is completely fine?