Spell check of Flutter docs (#45200)

No code changes, just comments: I spell-checked all the comments in the repo.
diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index 7e8e4e5..46b65a5 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -158,7 +158,7 @@
 
   /// Find and return a list of devices based on the current project and environment.
   ///
-  /// Returns a list of deviecs specified by the user.
+  /// Returns a list of devices specified by the user.
   ///
   /// * If the user specified '-d all', then return all connected devices which
   /// support the current project, except for fuchsia and web.
@@ -221,7 +221,7 @@
 
   /// Returns whether the device is supported for the project.
   ///
-  /// This exists to allow the check to be overriden for google3 clients.
+  /// This exists to allow the check to be overridden for google3 clients.
   bool isDeviceSupportedForProject(Device device, FlutterProject flutterProject) {
     return device.isSupportedForProject(flutterProject);
   }
@@ -545,7 +545,7 @@
   final int deviceVmServicePort;
   final String port;
   final String hostname;
-  /// A file where the vmservice uri should be written after the application is started.
+  /// A file where the vmservice URL should be written after the application is started.
   final String vmserviceOutFile;
 
   bool get hasObservatoryPort => hostVmServicePort != null;