alacritty: Fix url launcher section

URL launcher was not functional due to being not aligned with the mouse
section.

alacritty/.config/alacritty/alacritty.yml

@@ -257,10 +257,10 @@ mouse:
     # These are the modifiers that need to be held down for opening URLs when clicking
     # on them. The available modifiers are documented in the key binding section.
     # modifiers: Control|Shift
-url:
-  launcher:
-    program: xdg-open
-  modifiers: Control
+  url:
+    launcher:
+      program: xdg-open
+    modifiers: Control
 
 selection:
   semantic_escape_chars: ",│`|:\"' ()[]{}<>"