[x265] [PATCH] doc: update cli.rst for vmaf

[indumathi at multicorewareinc.com]

# HG changeset patch
# User indumathi at multicorewareinc.com
# Date 1523965217 -19800
#      Tue Apr 17 17:10:17 2018 +0530
# Node ID 2b2914134de41d9573270aa9cb95d99997a5b017
# Parent  7305220d469b0c262ef9742d90419ff85832d233
doc: update cli.rst for vmaf

diff -r 7305220d469b -r 2b2914134de4 doc/reST/api.rst
--- a/doc/reST/api.rst	Fri Apr 13 13:51:32 2018 +0530
+++ b/doc/reST/api.rst	Tue Apr 17 17:10:17 2018 +0530
@@ -411,7 +411,7 @@
     double x265_calculate_vmafscore(x265_param*, x265_vmaf_data*);
 
     /* x265_calculate_vmaf_framelevelscore:
-     *    returns VMAF score for each frame in a given input video. */
+     *    returns VMAF score for each frame in a given input video. The frame level VMAF score does not include temporal scores. */
     double x265_calculate_vmaf_framelevelscore(x265_vmaf_framedata*);
     
 .. Note::