[epiphany] Fix casing of downloads directory selection dialog title

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b31962d696d6eb7bade2849044a54bd3469d3472
Author: Adrian Perez de Castro <aperez igalia com>
Date:   Sun Mar 12 20:45:31 2017 +0200

    Fix casing of downloads directory selection dialog title
    
    Fixes bug #779950

 src/prefs-dialog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/prefs-dialog.c b/src/prefs-dialog.c
index b74beb8..6151d70 100644
--- a/src/prefs-dialog.c
+++ b/src/prefs-dialog.c
@@ -1198,7 +1198,7 @@ create_download_path_button (PrefsDialog *dialog)
 
   dir = ephy_file_get_downloads_dir ();
 
-  button = gtk_file_chooser_button_new (_("Select a Directory"),
+  button = gtk_file_chooser_button_new (_("Select a directory"),
                                         GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER);
 
   gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (button), dir);