[release-notes/gnome-3-22] it's blend modes, not blends modes

[Allan Day <allanday src gnome org>]

commit 89fe3d51446a0519eeac453f57cdaaee8e5d4b72
Author: Allan Day <allanpday gmail com>
Date:   Wed Sep 14 10:50:09 2016 +0100

    it's blend modes, not blends modes

 help/C/developers.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/developers.page b/help/C/developers.page
index 45adb66..06b575d 100644
--- a/help/C/developers.page
+++ b/help/C/developers.page
@@ -111,7 +111,7 @@
   <p>In addition to Flatpak portals integration, other improvements in GTK+
   3.22 include:</p>
   <list>
-    <item><p>CSS blends modes. This is a common CSS feature that allows
+    <item><p>CSS blend modes. This is a common CSS feature that allows
     images to be programmatically transformed. Georges Stavracas,
     who implemented the feature, has provided
     <link href="https://feaneron.com/2016/07/03/css-blend-modes-in-gtk/";>more