[gnome-software] trivial: Fix typos in comments

[Robert Ancell <rancell src gnome org>]

commit 2c9da2ac4f44bc253890c1edfc8da3ae498c79f4
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Nov 22 16:11:56 2017 +1300

    trivial: Fix typos in comments

 plugins/snap/gs-plugin-snap.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/plugins/snap/gs-plugin-snap.c b/plugins/snap/gs-plugin-snap.c
index ae8c586..c582a0b 100644
--- a/plugins/snap/gs-plugin-snap.c
+++ b/plugins/snap/gs-plugin-snap.c
@@ -438,7 +438,7 @@ gs_plugin_add_featured (GsPlugin *plugin,
        snap = snaps->pdata[0];
        app = snap_to_app (plugin, snap);
 
-       /* if has a sceenshot called 'banner.png' or 'banner-icon.png' then use them for the banner */
+       /* if has a screenshot called 'banner.png' or 'banner-icon.png' then use them for the banner */
        screenshots = snapd_snap_get_screenshots (snap);
        for (i = 0; i < screenshots->len; i++) {
                SnapdScreenshot *screenshot = screenshots->pdata[i];
@@ -759,7 +759,7 @@ gs_plugin_refine_app (GsPlugin *plugin,
                                g_autoptr(AsScreenshot) ss = NULL;
                                g_autoptr(AsImage) image = NULL;
 
-                               /* skip sceenshots used for banner when app is featured */
+                               /* skip screenshots used for banner when app is featured */
                                url = snapd_screenshot_get_url (screenshot);
                                filename = g_path_get_basename (url);
                                if (is_banner_image (filename) || is_banner_icon_image (filename))