change input precip units to mm/h

src/bmi_cfe.c

@@ -219,7 +219,7 @@ static const char *input_var_types[INPUT_VAR_NAME_COUNT] = {
 };
 
 static const char *input_var_units[INPUT_VAR_NAME_COUNT] = {
-        "kg m-2", //"atmosphere_water__liquid_equivalent_precipitation_rate"
+        "mm h-1", //"atmosphere_water__liquid_equivalent_precipitation_rate"
         "m s-1"   //"water_potential_evaporation_flux"
 };