[gimp-web/testing] 2018 report: fix performance subsection

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit d7e2f105ede6f2634a92d5eb1002e9b735845dc2
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Fri Dec 28 09:35:32 2018 +0000

    2018 report: fix performance subsection

 content/news/2018-12_annual_report/index.md | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/content/news/2018-12_annual_report/index.md b/content/news/2018-12_annual_report/index.md
index 878a6f47..43149b87 100644
--- a/content/news/2018-12_annual_report/index.md
+++ b/content/news/2018-12_annual_report/index.md
@@ -95,9 +95,10 @@ improvements, starting from merging existing work.
 **Performance and async jobs.** There are several attack vectors towards subpar
 performance of GIMP. Ell fixed some of the big issues by introducing async
 operations like lazy loading of fonts (which effectively fixed the long startup
-times for GIMP on Windows), and then moved all async logic over to GEGL. Both
-Ell and Øyvind Kolås contributed to improving performance of downscaling with
-bilinear and bicubic samplers and other aspects of GEGL.
+times for GIMP on Windows), and then moved all parallel processing in multiple
+threads over to GEGL. Both Ell and Øyvind Kolås contributed to improving
+performance of downscaling with bilinear and bicubic samplers and other aspects
+of GEGL.
 
 **Space invasion.** GIMP used to have the sRGB color space hardcoded into all
 processing. This couldn't work for everyone, and we introduced some changes to