In my previous reply, I already mentioned that bootstrap slider’s slide description does not support HTML tag. br or p tags are HTML tags, they do not work in bootstrap slider description.
Please kindly use layerslider plugin to do this.
Please also take note that layerslider plugin and revolution plugin will be removed from the upcoming Evolve Plus version 2.0.2
You are currently using Evolve Plus version 2.0.1 which still have those plugins bundled.