t1308-config-set: fix a test that has a typo

Change test 'find value_list for a key from a configset' to redirect the
result to 'expect' instead of 'except' which was a typo.

With this change, the test case actually fails because it uses
`configset_get_value`. Clearly, this was intended to be
`configset_get_value_multi` since the test expects a list of values
instead of a single value, so let's fix that, too.

Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1308-config-set.sh

@@ -166,14 +166,14 @@ test_expect_success 'find value with highest priority from a configset' '
 '
 
 test_expect_success 'find value_list for a key from a configset' '
-	cat >except <<-\EOF &&
+	cat >expect <<-\EOF &&
+	lama
+	ball
 	sam
 	bat
 	hask
-	lama
-	ball
 	EOF
-	test-tool config configset_get_value case.baz config2 .git/config >actual &&
+	test-tool config configset_get_value_multi case.baz config2 .git/config >actual &&
 	test_cmp expect actual
 '