use eza instead of exa for ls

.config/fish/config.fish

@@ -12,10 +12,10 @@ if status is-interactive
         alias cat="bat -pp"
     end
 
-    # exa
-    if command -q exa
-        alias ls="exa --icons"
-        alias tree="exa --icons --tree"
+    # eza
+    if command -q eza
+        alias ls="eza --icons"
+        alias tree="eza --icons --tree"
     end
 
     alias l="ls -l"