add docstrings for new generator properties

Cython/Utility/Generator.c

@@ -595,8 +595,10 @@ __Pyx_Generator_set_qualname(__pyx_GeneratorObject *self, PyObject *value)
 }
 
 static PyGetSetDef __pyx_Generator_getsets[] = {
-    {(char *) "__name__", (getter)__Pyx_Generator_get_name, (setter)__Pyx_Generator_set_name, 0, 0},
-    {(char *) "__qualname__", (getter)__Pyx_Generator_get_qualname, (setter)__Pyx_Generator_set_qualname, 0, 0},
+    {(char *) "__name__", (getter)__Pyx_Generator_get_name, (setter)__Pyx_Generator_set_name,
+     PyDoc_STR("name of the generator"), 0},
+    {(char *) "__qualname__", (getter)__Pyx_Generator_get_qualname, (setter)__Pyx_Generator_set_qualname,
+     PyDoc_STR("qualified name of the generator"), 0},
     {0, 0, 0, 0, 0}
 };