python:ndr: Use f-string to format exception message

If 'object' happened to be a tuple, we would get one of the following
errors:

TypeError: not enough arguments for format string
TypeError: not all arguments converted during string formatting

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

python/samba/ndr.py

@@ -52,7 +52,7 @@ def ndr_unpack(cls, data, allow_remaining=False):
 def ndr_print(object):
     ndr_print = getattr(object, "__ndr_print__", None)
     if ndr_print is None:
-        raise TypeError("%r is not a NDR object" % object)
+        raise TypeError(f"{object} is not a NDR object")
     return ndr_print()