change the link (#78302)

packages/flutter/lib/src/material/expansion_tile.dart

@@ -25,7 +25,7 @@ const Duration _kExpand = Duration(milliseconds: 200);
 ///  * [ListTile], useful for creating expansion tile [children] when the
 ///    expansion tile represents a sublist.
 ///  * The "Expand/collapse" section of
-///    <https://material.io/guidelines/components/lists-controls.html>.
+///    <https://material.io/components/lists#types>.
 class ExpansionTile extends StatefulWidget {
   /// Creates a single-line [ListTile] with a trailing button that expands or collapses
   /// the tile to reveal or hide the [children]. The [initiallyExpanded] property must