Fix Whaleback::Media::Obj::TypeTrans

lib/whaleback/media/obj.rb

@@ -30,11 +30,11 @@ module Whaleback
       before_destroy :stop_destroying, unless: :useless
 
       TypeTrans = {
-        ''         => 'Media::Obj',
-        'image'    => 'Media::Image',
-        'document' => 'Media::Document',
-        'video'    => 'Media::Video',
-        'voice'    => 'Media::Voice',
+        ''         => 'Whaleback::Media::Obj',
+        'image'    => 'Whaleback::Media::Obj::Image',
+        'document' => 'Whaleback::Media::Obj::Document',
+        'video'    => 'Whaleback::Media::Obj::Video',
+        'voice'    => 'Whaleback::Media::Obj::Voice',
       }
 
       class << self