controlflow: Use full example for "5 through 9" (GH-5907)

Replace example result of "5 through 9" with complete list: "5, 6, 7, 8, 9".
This format is more consistent with the surrounding examples.

Doc/tutorial/controlflow.rst

@@ -105,7 +105,7 @@ is possible to let the range start at another number, or to specify a different
 increment (even negative; sometimes this is called the 'step')::
 
     range(5, 10)
-       5 through 9
+       5, 6, 7, 8, 9
 
     range(0, 10, 3)
        0, 3, 6, 9