Fix two typos on comment.

Update some comments.

Fixes: 201111278
Fixes: 201111766
Test: TH pass
Change-Id: I20b6eb1b9bd6e47f9e94ee0ab13b3e4be9d09ec4

core/java/android/app/Activity.java

@@ -2507,12 +2507,11 @@ public class Activity extends ContextThemeWrapper
      *
      * <p>To get the voice interactor you need to call {@link #getVoiceInteractor()}
      * which would return non <code>null</code> only if there is an ongoing voice
-     * interaction session. You an also detect when the voice interactor is no
+     * interaction session. You can also detect when the voice interactor is no
      * longer valid because the voice interaction session that is backing is finished
      * by calling {@link VoiceInteractor#registerOnDestroyedCallback(Executor, Runnable)}.
      *
-     * <p>This method will be called only after {@link #onStart()} is being called and
-     * before {@link #onStop()} is being called.
+     * <p>This method will be called only after {@link #onStart()} and before {@link #onStop()}.
      *
      * <p>You should pass to the callback the currently supported direct actions which
      * cannot be <code>null</code> or contain <code>null</code> elements.

core/java/android/app/DirectAction.java

@@ -22,14 +22,13 @@ import android.os.Bundle;
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.Parcelable;
-import android.view.accessibility.AccessibilityNodeInfo;
 
 import com.android.internal.util.Preconditions;
 
 import java.util.Objects;
 
 /**
- * Represents a abstract action that can be perform on this app. This are requested from
+ * Represents an abstract action that can be perform on this app. This are requested from
  * outside the app's UI (eg by SystemUI or assistant). The semantics of these actions are
  * not specified by the OS. This allows open-ended and scalable approach for defining how
  * an app interacts with components that expose alternative interaction models to the user