[gegl] tests: fix color-model property enum value in alien-map xml composition

[Thomas Manni <tmanni src gnome org>]

commit e78ad3020ce42fc67616fa0c5922d7e294feeceb
Author: Thomas Manni <thomas manni free fr>
Date:   Fri Nov 17 18:20:18 2017 +0100

    tests: fix color-model property enum value in alien-map xml composition

 tests/compositions/alien-map.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/compositions/alien-map.xml b/tests/compositions/alien-map.xml
index 0763679..ddc3d1a 100644
--- a/tests/compositions/alien-map.xml
+++ b/tests/compositions/alien-map.xml
@@ -2,7 +2,7 @@
 <gegl>
   <node operation='gegl:alien-map'>
     <params>
-      <param name='color_model'>RGB</param>
+      <param name='color_model'>rgb</param>
       <param name='cpn_1_frequency'>2.0</param>
       <param name='cpn_2_frequency'>2.0</param>
       <param name='cpn_3_frequency'>2.0</param>