fix: typo spelling grammar (#88439)

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

@@ -555,7 +555,7 @@ class _BottomNavigationTile extends StatelessWidget {
 }
 
 
-// If the orientaion is landscape and layout is
+// If the orientation is landscape and layout is
 // BottomNavigationBarLandscapeLayout.linear then return a
 // icon-space-label row, where space is 8 pixels. Otherwise return a
 // icon-label column.

packages/flutter/lib/src/rendering/layer.dart

@@ -160,7 +160,7 @@ abstract class Layer extends AbstractNode with DiagnosticableTreeMixin {
   /// imply that it has been removed from its parent.
   final LayerHandle<Layer> _parentHandle = LayerHandle<Layer>();
 
-  /// Incremeneted by [LayerHandle].
+  /// Incremented by [LayerHandle].
   int _refCount = 0;
 
   /// Called by [LayerHandle].

packages/flutter_test/lib/src/binding.dart

@@ -499,7 +499,7 @@ abstract class TestWidgetsFlutterBinding extends BindingBase
   ///
   /// If `source` is [TestBindingEventSource.test], then the `event` is based
   /// in the local coordinate space and the event is likely triggered by
-  /// programatically simulated pointer events, such as:
+  /// programmatically simulated pointer events, such as:
   ///
   ///  * [WidgetController.tap] and alike methods, as well as directly using
   ///    [TestGesture]. They are usually used in

packages/flutter_tools/lib/src/commands/custom_devices.dart

@@ -367,7 +367,7 @@ class CustomDevicesAddCommand extends CustomDevicesCommandBase {
   static const String _kCheck = 'check';
   static const String _kSsh = 'ssh';
 
-  // A hostname consists of one or more "names", seperated by a dot.
+  // A hostname consists of one or more "names", separated by a dot.
   // A name may consist of alpha-numeric characters. Hyphens are also allowed,
   // but not as the first or last character of the name.
   static final RegExp _hostnameRegex = RegExp(r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$');

packages/flutter_tools/test/general.shard/mdns_discovery_test.dart

@@ -261,7 +261,7 @@ class FakeMDnsClient extends Fake implements MDnsClient {
     InternetAddress mDnsAddress,
   }) async {
     if (osErrorOnStart) {
-      throw const OSError('Operation not suppoted on socket', 102);
+      throw const OSError('Operation not supported on socket', 102);
     }
   }