[epiphany] Fix reader mode options translation

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 3754fad8f388e6f399970bf888e9782e0df723c1
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Wed Dec 25 14:55:52 2019 +0100

    Fix reader mode options translation
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/issues/994

 src/prefs-dialog.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/prefs-dialog.c b/src/prefs-dialog.c
index d9fe6f345..257fa95e2 100644
--- a/src/prefs-dialog.c
+++ b/src/prefs-dialog.c
@@ -2020,9 +2020,9 @@ reader_font_style_get_name (HdyEnumValueObject *value,
 
   switch (hdy_enum_value_object_get_value (value)) {
     case EPHY_PREFS_READER_FONT_STYLE_SANS:
-      return g_strdup (N_("Sans"));
+      return g_strdup (_("Sans"));
     case EPHY_PREFS_READER_FONT_STYLE_SERIF:
-      return g_strdup (N_("Serif"));
+      return g_strdup (_("Serif"));
     default:
       return NULL;
   }
@@ -2066,9 +2066,9 @@ reader_color_scheme_get_name (HdyEnumValueObject *value,
 
   switch (hdy_enum_value_object_get_value (value)) {
     case EPHY_PREFS_READER_COLORS_LIGHT:
-      return g_strdup (N_("Light"));
+      return g_strdup (_("Light"));
     case EPHY_PREFS_READER_COLORS_DARK:
-      return g_strdup (N_("Dark"));
+      return g_strdup (_("Dark"));
     default:
       return NULL;
   }