Fix typos in ListTile examples. (#129606)

Fix typos.

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

examples/api/lib/material/list_tile/list_tile.0.dart

@@ -20,19 +20,19 @@ class ListTileApp extends StatelessWidget {
         ),
         useMaterial3: true,
       ),
-      home: const LisTileExample(),
+      home: const ListTileExample(),
     );
   }
 }
 
-class LisTileExample extends StatefulWidget {
-  const LisTileExample({super.key});
+class ListTileExample extends StatefulWidget {
+  const ListTileExample({super.key});
 
   @override
-  State<LisTileExample> createState() => _LisTileExampleState();
+  State<ListTileExample> createState() => _ListTileExampleState();
 }
 
-class _LisTileExampleState extends State<LisTileExample> with TickerProviderStateMixin {
+class _ListTileExampleState extends State<ListTileExample> with TickerProviderStateMixin {
   late final AnimationController _fadeController;
   late final AnimationController _sizeController;
   late final Animation<double> _fadeAnimation;

examples/api/lib/material/list_tile/list_tile.1.dart

@@ -15,13 +15,13 @@ class ListTileApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       theme: ThemeData(useMaterial3: true),
-      home: const LisTileExample(),
+      home: const ListTileExample(),
     );
   }
 }
 
-class LisTileExample extends StatelessWidget {
-  const LisTileExample({super.key});
+class ListTileExample extends StatelessWidget {
+  const ListTileExample({super.key});
 
   @override
   Widget build(BuildContext context) {

examples/api/lib/material/list_tile/list_tile.selected.0.dart

@@ -15,19 +15,19 @@ class ListTileApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       theme: ThemeData(useMaterial3: true),
-      home: const LisTileExample(),
+      home: const ListTileExample(),
     );
   }
 }
 
-class LisTileExample extends StatefulWidget {
-  const LisTileExample({super.key});
+class ListTileExample extends StatefulWidget {
+  const ListTileExample({super.key});
 
   @override
-  State<LisTileExample> createState() => _LisTileExampleState();
+  State<ListTileExample> createState() => _ListTileExampleState();
 }
 
-class _LisTileExampleState extends State<LisTileExample> {
+class _ListTileExampleState extends State<ListTileExample> {
   int _selectedIndex = 0;
 
   @override