[gnome-shell-sass] *: Fix spelling mistakes found by codespell

[Florian Müllner <fmuellner src gnome org>]

commit f1c802f9e6f705bfc2d1954ac2157d30acaf2027
Author: Björn Daase <bjoern daase net>
Date:   Wed Aug 19 11:26:11 2020 +0200

    *: Fix spelling mistakes found by codespell
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1416

 _drawing.scss               | 2 +-
 widgets/_dialogs.scss       | 2 +-
 widgets/_notifications.scss | 2 +-
 widgets/_slider.scss        | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/_drawing.scss b/_drawing.scss
index 4ca723b..54ff9d4 100644
--- a/_drawing.scss
+++ b/_drawing.scss
@@ -79,7 +79,7 @@
 
 @function draw_button_hilight_color($c) {
 //
-// calculate the right top hilight color for buttons
+// calculate the right top highlight color for buttons
 //
 // $c: base color;
 //
diff --git a/widgets/_dialogs.scss b/widgets/_dialogs.scss
index 5ad99f8..fc77920 100644
--- a/widgets/_dialogs.scss
+++ b/widgets/_dialogs.scss
@@ -38,7 +38,7 @@
     font-size: 18pt;
     font-weight: 800;
 
-    &.leightweight {
+    &.lightweight {
       font-size: 13pt;
       font-weight: 800;
     }
diff --git a/widgets/_notifications.scss b/widgets/_notifications.scss
index 7d0cda2..5ff46a0 100644
--- a/widgets/_notifications.scss
+++ b/widgets/_notifications.scss
@@ -1,4 +1,4 @@
-/* Notifications & Mesage Tray */
+/* Notifications & Message Tray */
 
 $notification_banner_height: 64px;
 $notification_banner_width: 34em;
diff --git a/widgets/_slider.scss b/widgets/_slider.scss
index c0fdbb0..f21d62e 100644
--- a/widgets/_slider.scss
+++ b/widgets/_slider.scss
@@ -16,7 +16,7 @@ $slider_size: 15px;
   -barlevel-overdrive-color: $destructive_color;
   -barlevel-overdrive-border-color: if($variant == 'light', darken($destructive_color, 4%), 
lighten($destructive_color, 2%)); //trough border when red;
   -barlevel-overdrive-separator-width:1px;
-  // slider hander
+  // slider handler
   -slider-handle-radius: $slider_size * 0.5; // half the size of the size
   -slider-handle-border-width: 1px;
   -slider-handle-border-color: if($variant == 'light', $borders_color, $fg_color);