[gegl] math: reformulate description

[Øyvind Kolås <ok src gnome org>]

commit 35ad2fb4ca23169f77874b3771cc52b0fc6d4cb0
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri May 5 14:41:09 2017 +0200

    math: reformulate description

 operations/generated/math.rb |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/generated/math.rb b/operations/generated/math.rb
index 87e51c8..25e2387 100755
--- a/operations/generated/math.rb
+++ b/operations/generated/math.rb
@@ -157,7 +157,7 @@ gegl_op_class_init (GeglOpClass *klass)
   \"categories\"  , \"compositors:math\",
   \"reference-hash\"  , \"#{item[3]}\",
   \"description\" ,
-       _(\"Math operation #{name}, performs the operation per pixel, using either the constant provided in 
'value' or the corresponding pixel from the buffer on aux as operands. (formula: #{formula})\"),
+       _(\"Math operation #{name}, performs the operation per pixel, using either the constant provided in 
'value' or the corresponding pixel from the buffer on aux as operands. The result is the evaluation of the 
expression #{formula}\"),
        NULL);
 }
 #endif