You should definitely address the slope so water flows away, but soil in direct contact with the foundation can also transmit moisture to the porous concrete.

If you are pouring in the effort I would also grab some crushed gravel and trench around the wall, gravel goes in the trench, soil on top... There are other considerations like grading the trench, potentially a moisture barrier or perforated drain pipe in the bottom, but the details are somewhat dependant on your situation and how much of an issue water is for you. There are plenty of videos and resources on the web.