Fix window title configuration

Name of config was deprecated.

Install/Templates/alacritty/alacritty.yml

@@ -74,7 +74,7 @@ selection:
   semantic_escape_chars: ",│`|:\"' ()[]{}<>\t"
   save_to_clipboard: true
 
-dynamic_title: true
+window.dynamic_title: true
 
 cursor:
   # Values for `style`: