[gtk+] treeviewcolumn: Make a code snippet compile

[Timm Bäder <baedert src gnome org>]

commit 9f86cb2b4e3b6176fff506494272091a8b37d45c
Author: Timm Bäder <mail baedert org>
Date:   Wed Jan 3 14:10:22 2018 +0100

    treeviewcolumn: Make a code snippet compile

 gtk/gtktreeviewcolumn.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktreeviewcolumn.c b/gtk/gtktreeviewcolumn.c
index 3186c7f..f688d9e 100644
--- a/gtk/gtktreeviewcolumn.c
+++ b/gtk/gtktreeviewcolumn.c
@@ -1528,7 +1528,7 @@ gtk_tree_view_column_new_with_area (GtkCellArea *area)
  * Here’s a simple example:
  * |[<!-- language="C" -->
  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
- *  ...
+ *  // ...
  *  {
  *    GtkTreeViewColumn *column;
  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();