Update RFC-00xx-interpolation.md

Author: 0x00b1

RFC-00xx-interpolation.md

@@ -53,7 +53,7 @@ def unstructured_interpolate(
 
 Interpolate scattered data on an irregular grid.
 
-**Note**—Using this operation in dimensions greater than six is impractical because the memory required by the underlying triangulation grows exponentially with its rank.
+**Note**—Using this operation in dimensions greater than six is impractical because the memory required by the underlying Delaunay triangulation grows exponentially with its rank.
 
 **Note**—Because this operator uses a Delaunay triangulation, it can be sensitive to scaling issues in `input`. When this occurs, you should standardize `input` to improve the results.