avfilter/xbr: consistent use of @see

libavfilter/vf_xbr.c

@@ -25,8 +25,8 @@
  * XBR Filter is used for depixelization of image.
  * This is based on Hyllian's 2xBR shader.
  *
- * @see : http://www.libretro.com/forums/viewtopic.php?f=6&t=134
- * @see : https://github.com/yoyofr/iFBA/blob/master/fba_src/src/intf/video/scalers/xbr.cpp
+ * @see http://www.libretro.com/forums/viewtopic.php?f=6&t=134
+ * @see https://github.com/yoyofr/iFBA/blob/master/fba_src/src/intf/video/scalers/xbr.cpp
  * Future work : To implement x3 and x4 scale, and threading.
  */