test_astobj2: Fix warning for missing trailing slash in category

This patch adds a trailing slash to the category for this test.
No more warning.

Tested-by: George Joseph

Review: https://reviewboard.asterisk.org/r/4295/
........

Merged revisions 430059 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@430060 65c4cc65-6c06-0410-ace0-fbb531ad65f3

tests/test_astobj2.c

@@ -2026,7 +2026,7 @@ AST_TEST_DEFINE(astobj2_test_perf)
 	switch (cmd) {
 	case TEST_INIT:
 		info->name = "astobj2_test_perf";
-		info->category = "/main/astobj2/perf";
+		info->category = "/main/astobj2/perf/";
 		info->summary = "Test container performance";
 		info->description =
 			"Runs container traversal tests.";