Fixed small issue in an old call to time.sleep() which has been replaced by sleep() since a long time

__init__.py

@@ -198,7 +198,7 @@ class lcdMenu:
         
         # show a exit when there's no specific return value
         if not return_value:  # if the return value is None / nothing was returned -> show a closing message
-            while self.ok_btn.value() == 1: time.sleep(self.debounce_time)  # wait till ok_btn release (e.g. if the "program" is a simple send action)
+            while self.ok_btn.value() == 1: sleep(self.debounce_time)  # wait till ok_btn release (e.g. if the "program" is a simple send action)
             self.lcd.move_to(0,0)
             if self.lcd.num_lines == 4:
                 self.lcd.putstr(f"{self.fill_char*lw}{' '*lw*2}{self.fill_char*lw}")  # fill the first and last line with 'fill_char's