[gimp] GimpArray: Add missing array length GIR annotation

[Niels De Graef <nielsdg src gnome org>]

commit 79319803a216148b0cd1e70cd29b3a9da6ab4c5b
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Wed Oct 28 20:51:48 2020 +0100

    GimpArray: Add missing array length GIR annotation

 libgimpbase/gimpparamspecs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/libgimpbase/gimpparamspecs.h b/libgimpbase/gimpparamspecs.h
index a9c3831aee..12ae18a5e1 100644
--- a/libgimpbase/gimpparamspecs.h
+++ b/libgimpbase/gimpparamspecs.h
@@ -80,7 +80,7 @@ G_BEGIN_DECLS
 
 /**
  * GimpArray:
- * @data:        pointer to the array's data.
+ * @data: (array length=length): pointer to the array's data.
  * @length:      length of @data, in bytes.
  * @static_data: whether @data points to statically allocated memory.
  **/