tmp: nels suggestion

Co-authored-by: Nels <[email protected]>

python/ngen_conf/src/ngen/config/cfe.py

@@ -25,7 +25,8 @@ class CFEParams(BaseModel):
     """
     Surface runoff parameter; REFKDT is a tuneable parameter that significantly
     impacts surface infiltration and hence the partitioning of total runoff into
-    surface and subsurface runoff. Increasing REFKDT decreases surface runoff
+    surface and subsurface runoff. Increasing REFKDT decreases surface runoff.
+    Only applicable when surface_water_partitioning_scheme is Schaake.
     """
     expon: Optional[float]
     """soil primary outlet coefficient"""