[gegl] Update NEWS.txt

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 0846a4c7760b99c843599cee2c0697f61c945237
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Fri May 29 17:14:50 2020 +0000

    Update NEWS.txt

 docs/NEWS.txt | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/docs/NEWS.txt b/docs/NEWS.txt
index 5a13063ec..3c9cb675b 100644
--- a/docs/NEWS.txt
+++ b/docs/NEWS.txt
@@ -52,14 +52,14 @@ gegl-graph: add a gegl-chain tutorial as default script.
 
 New Ops:
 
-border-align: place a buffer within the borders of another.
-pack: Joins two buffers into one, with optional gap.
+border-align: place a buffer within the borders of another one.
+pack: joins two buffers into one, with optional gap.
 bloom: adds a glow around highlights.
-piecewise-blend: Use a grayscale map as index into array of buffers used as LUT.
+piecewise-blend: uses a grayscale map as index into array of buffers used as LUT.
 variable-blur: uses piecewise-blend piecewise-blend and gaussian blur to approximate blurs with per-pixel 
blur radius.
 focus-blur: a vignetting blur, using variable-blur.
 reset-origin: moves upper left of extent to 0,0
-band-tune: new op in workshop.
+band-tune: parametric band equalizer for tuning frequency bands of image.
 
 
 GEGL-0.4.22 2020-02-18