typo in dsh_basis-docs

pymagglobal/utils.py

@@ -380,7 +380,7 @@ def dsh_basis(lmax, z, out, R=REARTH):
     ----------
     lmax : int
         The maximal spherical harmonics degree.
-    at : array of shape (3, n)
+    z : array of shape (3, n)
         The points at which to evaluate the basis functions, given as
             * z[0, :] contains the co-latitude in degrees.
             * z[1, :] contains the longitude in degrees.