[ex-mainfile] Correct tabulation range

exercises/exercise-mainfile/1pproblem.hh

@@ -55,7 +55,7 @@ public:
     OnePTestProblem(std::shared_ptr<const GridGeometry> gridGeometry)
     : ParentType(gridGeometry)
     {
-        FluidSystem::Component::init(/*tempMin=*/272.15,
+        FluidSystem::Component::init(/*tempMin=*/273.15,
                                      /*tempMax=*/294.15,
                                      /*numTemp=*/10,
                                      /*pMin=*/1.0e4,