fix: scroll-window 1p regression - use 'page' unit string not 'p'

kitty/rc/scroll_window.py

@@ -79,6 +79,8 @@ using this option means that you will not be notified of failures.
                             if not isinstance(amt, int) and not amt.is_integer():
                                 amt = round(window.screen.lines * amt)
                                 unit = 'line'
+                            else:
+                                unit = 'page'
                             assert isinstance(amt, int)
                             direction = 'up' if amt < 0 else 'down'
                             func = getattr(window, f'scroll_{unit}_{direction}')