Update FAB M3 token template class to new naming scheme and fix a typo in `card.dart` (#102654)

dev/tools/gen_defaults/lib/fab_template.dart

@@ -13,8 +13,8 @@ class FABTemplate extends TokenTemplate {
   @override
   String generate() => '''
 // Generated version ${tokens["version"]}
-class _M3Defaults extends FloatingActionButtonThemeData {
-  _M3Defaults(this.context, this.type, this.hasChild)
+class _TokenDefaultsM3 extends FloatingActionButtonThemeData {
+  _TokenDefaultsM3(this.context, this.type, this.hasChild)
     : super(
         elevation: ${elevation("md.comp.fab.primary.container")},
         focusElevation: ${elevation("md.comp.fab.primary.focus.container")},

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

@@ -90,8 +90,8 @@ class Card extends StatelessWidget {
 
   /// The color used as an overlay on [color] to indicate elevation.
   ///
-  /// If this is null, no overlay will be applied. Otherwise the this
-  /// color will be composited on top of [color] with an opacity related
+  /// If this is null, no overlay will be applied. Otherwise this color
+  /// will be composited on top of [color] with an opacity related
   /// to [elevation] and used to paint the background of the card.
   ///
   /// The default is null.

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

@@ -509,7 +509,7 @@ class FloatingActionButton extends StatelessWidget {
     final ThemeData theme = Theme.of(context);
     final FloatingActionButtonThemeData floatingActionButtonTheme = theme.floatingActionButtonTheme;
     final FloatingActionButtonThemeData defaults = theme.useMaterial3
-      ? _M3Defaults(context, _floatingActionButtonType, child != null)
+      ? _TokenDefaultsM3(context, _floatingActionButtonType, child != null)
       : _M2Defaults(context, _floatingActionButtonType, child != null);
 
     final Color foregroundColor = this.foregroundColor
@@ -783,8 +783,8 @@ class _M2Defaults extends FloatingActionButtonThemeData {
 // database by the script dev/tools/gen_defaults/bin/gen_defaults.dart.
 
 // Generated version v0_92
-class _M3Defaults extends FloatingActionButtonThemeData {
-  _M3Defaults(this.context, this.type, this.hasChild)
+class _TokenDefaultsM3 extends FloatingActionButtonThemeData {
+  _TokenDefaultsM3(this.context, this.type, this.hasChild)
     : super(
         elevation: 6.0,
         focusElevation: 6.0,