Update complex example

Author: aleksanderwozniak

example/lib/pages/complex_example.dart

@@ -15,13 +15,14 @@ class TableComplexExample extends StatefulWidget {
 }
 
 class _TableComplexExampleState extends State<TableComplexExample> {
-  late final PageController _pageController;
   late final ValueNotifier<List<Event>> _selectedEvents;
   final ValueNotifier<DateTime> _focusedDay = ValueNotifier(DateTime.now());
   final Set<DateTime> _selectedDays = LinkedHashSet<DateTime>(
     equals: isSameDay,
     hashCode: getHashCode,
   );
+
+  late PageController _pageController;
   CalendarFormat _calendarFormat = CalendarFormat.month;
   RangeSelectionMode _rangeSelectionMode = RangeSelectionMode.toggledOff;
   DateTime? _rangeStart;

lib/src/widgets/calendar_page.dart

@@ -57,12 +57,14 @@ class CalendarPage extends StatelessWidget {
 
   Widget _buildWeekNumbers(BuildContext context) {
     final rowAmount = visibleDays.length ~/ 7;
+
     return Column(
       children: [
         if (dowVisible) SizedBox(height: dowHeight ?? 0),
         ...List.generate(rowAmount, (index) => index * 7)
             .map((index) => Expanded(
-                child: weekNumberBuilder!(context, visibleDays[index])))
+                  child: weekNumberBuilder!(context, visibleDays[index]),
+                ))
             .toList()
       ],
     );