Specify the config property of lint-test files as a map

Summary: Self-explanatory. This is implied anyway as we iterate over it with a `foreach` loop.

Test Plan: `arc unit`

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11174

src/lint/linter/__tests__/ArcanistLinterTestCase.php

@@ -47,7 +47,7 @@ abstract class ArcanistLinterTestCase extends ArcanistPhutilTestCase {
       $config,
       array(
         'hook' => 'optional bool',
-        'config' => 'optional wild',
+        'config' => 'optional map<string, wild>',
         'path' => 'optional string',
       ));