Merge pull request #20 from nvpbrown/yuvtarget

Fix bug number typo in EXT_YUV_target change log.
diff --git a/extensions/EXT/EXT_YUV_target.txt b/extensions/EXT/EXT_YUV_target.txt
index f2c5a9a..91fe49d 100644
--- a/extensions/EXT/EXT_YUV_target.txt
+++ b/extensions/EXT/EXT_YUV_target.txt
@@ -536,8 +536,8 @@
         - Add yuvCscStandardExt itu_* to the list of keywords
         - Add yuvCscStandardExt as a basic type and clarify that this type
           can only be used in assignments or as a function argument.
-        - Add rgb_2_yuv and yuv_2_rgb as built-in functions 
-          (Bug 8114).
+        - Add rgb_2_yuv and yuv_2_rgb as built-in functions
+          (Bug 15704).
 
     #15 (April 23, 2015, Jon Leech)
         - Fix typo EGLImageTargetTexImage2DOES -> EGLImageTargetTexture2DOES