Update fish.txt

Author: ajeetdsouza

templates/fish.txt

@@ -30,7 +30,7 @@ end
 function __zoxide_cd
     if set -q __zoxide_loop
         builtin echo "zoxide: infinite loop detected"
-        builtin echo "Avoid aliasing `cd` to `z` directly, use `zoxide init --cmd=cd fish` instead"
+        builtin echo "Avoid aliasing `cd` to `{{cmd}}` directly, use `zoxide init --cmd=cd fish` instead"
         return 1
     end