[gimp-help] Small typo fixed

[Marco Ciampa <marcoc src gnome org>]

commit b5c4cebb31079d4874507a95de03edb6392dee89
Author: Marco Ciampa <ciampix posteo net>
Date:   Tue Jan 22 15:31:32 2019 +0100

    Small typo fixed

 src/filters/generic/distance-map.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/filters/generic/distance-map.xml b/src/filters/generic/distance-map.xml
index 8a059940e..6aacbc24b 100644
--- a/src/filters/generic/distance-map.xml
+++ b/src/filters/generic/distance-map.xml
@@ -143,7 +143,7 @@
               </imageobject>
               <caption>
                 <para>
-                  Threshold low = 0.223: <quote>bright red</quote> red circle 
+                  Threshold low = 0.223: <quote>bright red</quote> circle 
                   appears.
                 </para>
               </caption>
@@ -209,4 +209,4 @@
       Searching  for an example using Distance map filter in image processing...
     </para>
   </sect3>
-</sect2>
\ No newline at end of file
+</sect2>