[gtk/matthiasc/for-master] Adjust docs

[Matthias Clasen <matthiasc src gnome org>]

commit 6e84a8cb144d7c0be59e150d46eab5dd9cce43ea
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 5 21:40:58 2021 -0500

    Adjust docs
    
    We support drop-shadow now.

 docs/reference/gtk/css-properties.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/docs/reference/gtk/css-properties.md b/docs/reference/gtk/css-properties.md
index 809669dd90..8fa9819fc7 100644
--- a/docs/reference/gtk/css-properties.md
+++ b/docs/reference/gtk/css-properties.md
@@ -129,7 +129,7 @@ done with
 |:-----------|:----------|:------|
 |color       | [CSS Color Level 3](https://www.w3.org/TR/css3-color/#foreground) | |
 |opacity     | [CSS Color Level 3](https://www.w3.org/TR/css3-color/#opacity) | |
-|filter      | [CSS Filter Effect Level 1](https://drafts.fxtf.org/filters/#FilterProperty) | CSS allows 
drop-shadow |
+|filter      | [CSS Filter Effect Level 1](https://drafts.fxtf.org/filters/#FilterProperty) | |
 |font-family | [CSS Fonts Level 3](https://www.w3.org/TR/css3-fonts/#font-family-prop) | defaults to 
gtk-font-name setting |
 |font-size   | [CSS Fonts Level 3](https://www.w3.org/TR/css3-fonts/#font-size-prop) | defaults to 
gtk-font-name setting |
 |font-style  | [CSS Fonts Level 3](https://www.w3.org/TR/css3-fonts/#font-style-prop) | |