Update expected data type of input array in real ufunc

Author: antonwolfy

dpctl/tensor/_elementwise_funcs.py

@@ -1653,7 +1653,7 @@
 
 Args:
     x (usm_ndarray):
-        Input array, expected to have a numeric data type.
+        Input array. May have any data type.
     out (Union[usm_ndarray, None], optional):
         Output array to populate.
         Array must have the correct shape and the expected data type.