docs: Update virtual_style default value

Author: fei6409

README.md

@@ -44,7 +44,7 @@ Default config:
 ```lua
 {
     date_format = "%d.%m.%Y",
-    virtual_style = "right",
+    virtual_style = "right_align",
     views = {
         window = window_view,
         virtual = virtual_view,