[easytag] Fixed typo in string

[Daniel Mustieles GarcÃa <dmustieles src gnome org>]

commit 98b3dd22bf8c635f5170b75ecb5d4d398fe481f7
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Thu Jan 24 10:36:18 2013 +0100

    Fixed typo in string

 src/prefs.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/prefs.c b/src/prefs.c
index e1c543c..c3c24af 100644
--- a/src/prefs.c
+++ b/src/prefs.c
@@ -560,7 +560,7 @@ void Open_OptionsWindow (void)
     gtk_table_attach(GTK_TABLE(Table),FilenameCharacterSetDiscard,1,2,3,4,GTK_FILL,GTK_FILL,0,0);
     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(FilenameCharacterSetDiscard),FILENAME_CHARACTER_SET_DISCARD);
     gtk_widget_set_tooltip_text(FilenameCharacterSetDiscard,_("With this option, when "
-        "a characters cannot be represented in the target character set, it will "
+        "a character cannot be represented in the target character set, it will "
         "be silently discarded."));