Update UPGRADE.md

UPGRADE.md

@@ -1,18 +1,17 @@
-Upgrade from 2.x to 3.x
-=======================
+# Upgrade from 3.x to 4.x
 
-### `->path('...')`
 
-Replace your server paths configuration:
 
-```php
-server(...)
-  ->path(...);
-```
+# Upgrade from 2.x to 3.x
 
-to:
-
-```php 
-server(...)
-  ->env('deploy_path', '...');
-```
+  1. ### `->path('...')`   
+     Replace your server paths configuration:
+     ```php
+     server(...)
+       ->path(...);
+     ```
+     to:
+     ```php 
+     server(...)
+       ->env('deploy_path', '...');
+     ```