[epiphany] Improve a comment

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 11b567c31e61324a38ca10777fb4538f22004b82
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Oct 27 19:21:40 2016 -0500

    Improve a comment

 embed/web-extension/ephy-web-overview.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/embed/web-extension/ephy-web-overview.c b/embed/web-extension/ephy-web-overview.c
index e7a1c35..aec5467 100644
--- a/embed/web-extension/ephy-web-overview.c
+++ b/embed/web-extension/ephy-web-overview.c
@@ -366,8 +366,8 @@ ephy_web_overview_document_loaded (WebKitWebPage   *web_page,
     if (g_strcmp0 (class, "overview-item") == 0) {
       OverviewItem *item = overview_item_new (element);
 
-      /* URLs and titles are always sent from the UI process, but thumbnails don't,
-       * so update the model with the thumbnail of there's one.
+      /* URLs and titles are always sent from the UI process, but thumbnails
+       * aren't, so update the model with the thumbnail if there's one.
        */
       ephy_web_overview_update_thumbnail_in_model_from_element (overview, item->url, item->thumbnail);