alacritty: Collapse font families, remove mouse.url.launcher to allow autodetection

.config/alacritty/alacritty.yml

@@ -38,12 +38,7 @@ scrolling:
   auto_scroll: false
 
 font:
-  normal:
-    family: Hack
-  bold:
-    family: Hack
-  italic:
-    family: Hack
+  normal: { family: Hack }
   size: 11.0
 
 # Display tabs using this many cells (changes require restart)
@@ -85,9 +80,7 @@ colors:
 
 mouse:
   hide_when_typing: true
-  url:
-    launcher:  xdg-open
-    modifiers: Control|Shift
+  url: { modifiers: Control|Shift }
 
 mouse_bindings:
   - { mouse: Middle, action: PasteSelection }