[gnome-shell-sass] theme: add space between & and .

[Florian Müllner <fmuellner src gnome org>]

commit b984d7292d5eaa767f1314cc0abff78095dffd0a
Author: Sam Hewitt <sam snwh org>
Date:   Fri Dec 20 16:19:39 2019 -0500

    theme: add space between & and .
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/904

 widgets/_dash.scss | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/widgets/_dash.scss b/widgets/_dash.scss
index dc02d00..20cdae5 100644
--- a/widgets/_dash.scss
+++ b/widgets/_dash.scss
@@ -51,10 +51,9 @@ $dash_border_radius: $modal_radius * 1.5;
 
 // Show apps button
 .show-apps {
-  background-color: transparent;
   color: $osd_fg_color;
 
-  &.overview-icon {
+  & .overview-icon {
     @extend %icon_tile;
     color: $osd_fg_color;
   }