[gegl] vignette: improve op description

[Øyvind Kolås <ok src gnome org>]

commit 828ee5219621d8c90ffa7120df85d61fac9b0904
Author: �yvind Kolås <pippin gimp org>
Date:   Mon Apr 25 19:14:52 2011 +0100

    vignette: improve op description

 operations/common/vignette.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/vignette.c b/operations/common/vignette.c
index e742e1a..65abd50 100644
--- a/operations/common/vignette.c
+++ b/operations/common/vignette.c
@@ -216,7 +216,7 @@ gegl_chant_class_init (GeglChantClass *klass)
 
   operation_class->name        = "gegl:vignette";
   operation_class->categories  = "render";
-  operation_class->description = _("radial gradient renderer");
+  operation_class->description = _("A vignetting op, applies a vignette to an image. Simulates the luminance fall off at edge of exposed film, and some other fuzzier border effects that can naturally occur with analoge photograpy.");
 }
 
 #endif