[gnome-software] trivial: Fix comment typo

[Robert Ancell <rancell src gnome org>]

commit 3aabd27244e9463068748b60951372f28ceb6ebe
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri May 26 09:46:53 2017 +1200

    trivial: Fix comment typo

 plugins/dummy/gs-self-test.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/dummy/gs-self-test.c b/plugins/dummy/gs-self-test.c
index 4f48dac..7517e73 100644
--- a/plugins/dummy/gs-self-test.c
+++ b/plugins/dummy/gs-self-test.c
@@ -202,7 +202,7 @@ gs_plugins_dummy_updates_func (GsPluginLoader *plugin_loader)
        g_assert_no_error (error);
        g_assert (list != NULL);
 
-       /* make sure there are two entries */
+       /* make sure there are three entries */
        g_assert_cmpint (gs_app_list_length (list), ==, 3);
        app = gs_app_list_index (list, 0);
        g_assert_cmpstr (gs_app_get_id (app), ==, "chiron.desktop");