[gegl] noise-cell: don't try to do a multiline C string

[Øyvind Kolås <ok src gnome org>]

commit 40f1c92909c5063e7a7d8ee04ead168e70a8b2bb
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Apr 3 18:33:28 2016 +0200

    noise-cell: don't try to do a multiline C string

 operations/common/noise-cell.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/operations/common/noise-cell.c b/operations/common/noise-cell.c
index cb4217f..2f7f622 100644
--- a/operations/common/noise-cell.c
+++ b/operations/common/noise-cell.c
@@ -434,9 +434,7 @@ gegl_op_class_init (GeglOpClass *klass)
 
     "description",        _("Generates a cellular texture.  "),
 
-    "reference",  "Steven Worley. 1996. A cellular texture basis function. In
-    Proceedings of the 23rd annual conference on Computer graphics and
-    interactive techniques (SIGGRAPH '96)."
+    "reference",  "Steven Worley. 1996. A cellular texture basis function. In Proceedings of the 23rd annual 
conference on Computer graphics and interactive techniques (SIGGRAPH '96).",
 
     NULL);
 }