[gtk+] CssProvider: Use consistent theme name placeholder

[Daniel Boles <dboles src gnome org>]

commit 6a9c14b2fa1c0dcd212eb5117d68a0cf128c2b2a
Author: Daniel Boles <dboles src gmail com>
Date:   Wed Nov 8 06:48:17 2017 +0000

    CssProvider: Use consistent theme name placeholder
    
    commit 475d916eb92c0106d09525bcca938f05fd6a81b5 added various paths that
    use theme-name for this, but the existing path already used THEME, with
    a subsequent description referring to the latter. So use that everywhere

 gtk/gtkcssprovider.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index bb8625b..456347d 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -63,9 +63,9 @@
  * In addition, certain files will be read when GTK+ is initialized. First, the
  * file `$XDG_CONFIG_HOME/gtk-4.0/gtk.css` is loaded if it exists. Then, GTK+
  * loads the first existing file among
- * `XDG_DATA_HOME/themes/theme-name/gtk-VERSION/gtk.css`,
- * `$HOME/.themes/theme-name/gtk-VERSION/gtk.css`,
- * `$XDG_DATA_DIRS/themes/theme-name/gtk-VERSION/gtk.css` and
+ * `XDG_DATA_HOME/themes/THEME/gtk-VERSION/gtk.css`,
+ * `$HOME/.themes/THEME/gtk-VERSION/gtk.css`,
+ * `$XDG_DATA_DIRS/themes/THEME/gtk-VERSION/gtk.css` and
  * `DATADIR/share/themes/THEME/gtk-VERSION/gtk.css`, where `THEME` is the name of
  * the current theme (see the #GtkSettings:gtk-theme-name setting), `DATADIR`
  * is the prefix configured when GTK+ was compiled (unless overridden by the