[gimp-help] Fix: we should now use nn as language code for Norwegian Nynorsk

[Jacob Boerema <jboerema src gnome org>]

commit 7d37f4a1fa14318c17ff68adc557207064a8f95a
Author: Jacob Boerema <jgboerema gmail com>
Date:   Wed Mar 2 17:34:19 2022 -0500

    Fix: we should now use nn as language code for Norwegian Nynorsk
    
    (cherry picked from commit 5f247fa0d85d98f442754c07a2513574952d5950)

 stylesheets/authors.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/stylesheets/authors.xml b/stylesheets/authors.xml
index a6b184224..65e911372 100644
--- a/stylesheets/authors.xml
+++ b/stylesheets/authors.xml
@@ -26,7 +26,7 @@
   <creator role="documenter" lang="pt_BR">João S. O. Bueno</creator>
   <creator role="documenter" lang="fr en">Julien Hardelin</creator>
   <creator role="technican" lang="da">Kenneth Nielsen</creator>
-  <creator role="documenter" lang="no">Kolbjørn Stuestøl</creator>
+  <creator role="documenter" lang="nn">Kolbjørn Stuestøl</creator>
   <creator role="documenter" lang="it">Marco Ciampa</creator>
   <creator role="documenter" lang="es">María Majadas</creator>
   <creator role="documenter" lang="es">Milagros Infante Montero</creator>