Removed a simple consider-using-in pitfall case (#358)

* Removed a simple pitfall case where the code was incurring into the Pylint error R1714 consider-using-in https://github.com/vald-phoenix/pylint-errors/blob/master/plerr/errors/refactoring/R1714.md

* removed a typo

bpytop.py

@@ -4827,7 +4827,7 @@ class Menu:
 				elif key in ["escape", "o", "M", "f2"]:
 					cls.close = True
 					break
-				elif key == "tab" or (key == "down" and selected_int == len(option_items) - 1 and (page == pages or pages == 0)):
+				elif key == "tab" or (key == "down" and selected_int == len(option_items) - 1 and page in [0, pages]):
 					if cat_int == len(categories) - 1:
 						cat_int = 0
 					else: