Fix typos in comments

There is a "t" in "outside"

include/vlc_vout_wrapper.h

@@ -26,7 +26,7 @@
 
 #include <vlc_vout_display.h>
 
-/* XXX DO NOT use it ouside the vout module wrapper XXX */
+/* XXX DO NOT use it outside the vout module wrapper XXX */
 
 /**
  * It retreive a picture from the display

src/input/input_interface.h

 /*****************************************************************************
- * input_interface.h: Input functions usable ouside input code.
+ * input_interface.h: Input functions usable outside input code.
  *****************************************************************************
  * Copyright (C) 1998-2008 the VideoLAN team
  * $Id$