[gtk] ProgressBar: Drop leftover "superimposed" mention

[Daniel Boles <dboles src gnome org>]

commit db223983615d3b2c21cf9a5b255b8199a254cba3
Author: Daniel Boles <dboles src gmail com>
Date:   Sat Mar 31 12:27:21 2018 +0100

    ProgressBar: Drop leftover "superimposed" mention
    
    This was missed from the commit that dropped other mentions to the
    previous ability to superimpose text.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=748784

 gtk/gtkprogressbar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkprogressbar.c b/gtk/gtkprogressbar.c
index 7c5dea58cb..31fbec0ac7 100644
--- a/gtk/gtkprogressbar.c
+++ b/gtk/gtkprogressbar.c
@@ -977,7 +977,7 @@ gtk_progress_bar_set_text (GtkProgressBar *pbar,
 /**
  * gtk_progress_bar_set_show_text:
  * @pbar: a #GtkProgressBar
- * @show_text: whether to show superimposed text
+ * @show_text: whether to show text
  *
  * Sets whether the progress bar will show text next to the bar.
  * The shown text is either the value of the #GtkProgressBar:text