typo fix in documentation of dsh_basis

pymagglobal/utils.py

@@ -360,7 +360,7 @@ def dsh_basis(lmax, z, out, R=REARTH):
             * z[1, :] contains the longitude in degrees.
             * z[2, :] contains the radius in kilometers.
 
-    out : array of shape (lmax2N(lmax), 2*n)
+    out : array of shape (lmax2N(lmax), 3*n)
         The output array in which the basis functions are stored, as follows:
             * out[i, 0::3]  contains the North component of the basis
                             corresponding to degree l and order m,