[gimp-help/gimp-help-2-10] desaturate.xml: Small fixes

[Jacob Boerema <jboerema src gnome org>]

commit 63f31a8b9739081c2c7f721adba9d4783ac36a66
Author: Anders Jonsson <anders jonsson norsjovallen se>
Date:   Mon Mar 14 20:00:53 2022 +0100

    desaturate.xml: Small fixes
    
    (cherry picked from commit c0bfd564b059370a8ab768dcbaa9bab609f4c4f8)

 src/menus/colors/desaturate/desaturate.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/menus/colors/desaturate/desaturate.xml b/src/menus/colors/desaturate/desaturate.xml
index 647816de0..b0f26f357 100644
--- a/src/menus/colors/desaturate/desaturate.xml
+++ b/src/menus/colors/desaturate/desaturate.xml
@@ -106,7 +106,7 @@
             <mediaobject>
               <textobject>
                 <phrase>
-                  Lightness (HSL)) = &frac12; &times; (max(R,G,B) + min(R,G,B))
+                  Lightness (HSL) = &frac12; &times; (max(R,G,B) + min(R,G,B))
                 </phrase>
               </textobject>
             </mediaobject>
@@ -442,7 +442,7 @@
           </para>
           <para>
             The "Lightness (HSL)", "Average (HSI Intensity)", and "Value (HSV)"
-            ways to to convert a color image to black and white use color space models
+            ways to convert a color image to black and white use color space models
             that were invented for fast processing on consumer-grade computers from the
             1990s. For details see
             <ulink url="https://en.wikipedia.org/wiki/HSL_and_HSV";>HSL and HSV</ulink>,