test/type_info: fix issue on Windows

unittest/python/test_type_info.py

 import type_info
 
 d = type_info.Dummy()
-assert d.type_info().pretty_name() == "Dummy"
+assert "Dummy" in d.type_info().pretty_name()
 
 assert type_info.type_info(1).pretty_name() == "int"
 assert "basic_string" in type_info.type_info("toto").pretty_name()