[gimp] libgimpwidgets: fix a doc glitch in GimpStringComboBox

[Michael Natterer <mitch src gnome org>]

commit e7f041492afb56544d79cb6facf638cf2b857af3
Author: Michael Natterer <mitch gimp org>
Date:   Thu Aug 1 12:23:05 2019 +0200

    libgimpwidgets: fix a doc glitch in GimpStringComboBox

 libgimpwidgets/gimpstringcombobox.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/libgimpwidgets/gimpstringcombobox.c b/libgimpwidgets/gimpstringcombobox.c
index d2bbfba403..0a35fdf8f5 100644
--- a/libgimpwidgets/gimpstringcombobox.c
+++ b/libgimpwidgets/gimpstringcombobox.c
@@ -104,7 +104,7 @@ gimp_string_combo_box_class_init (GimpStringComboBoxClass *klass)
                                                      GIMP_PARAM_READWRITE |
                                                      G_PARAM_CONSTRUCT_ONLY));
   /**
-   * GimpStringComboBox:id-column:
+   * GimpStringComboBox:label-column:
    *
    * The column in the associated GtkTreeModel that holds strings to
    * be used as labels in the combo-box.