Fix typos.

core/java/android/appwidget/AppWidgetProvider.java

@@ -22,7 +22,7 @@ import android.content.Intent;
 import android.os.Bundle;
 
 /**
- * A conveience class to aid in implementing an AppWidget provider.
+ * A convenience class to aid in implementing an AppWidget provider.
  * Everything you can do with AppWidgetProvider, you can do with a regular {@link BroadcastReceiver}.
  * AppWidgetProvider merely parses the relevant fields out of the Intent that is received in
  * {@link #onReceive(Context,Intent) onReceive(Context,Intent)}, and calls hook methods

graphics/java/android/graphics/Bitmap.java

@@ -400,7 +400,7 @@ public final class Bitmap implements Parcelable {
      * @param y        The y coordinate of the first pixel in source
      * @param width    The number of pixels in each row
      * @param height   The number of rows
-     * @param m        Option matrix to be applied to the pixels
+     * @param m        Optional matrix to be applied to the pixels
      * @param filter   true if the source should be filtered.
      *                   Only applies if the matrix contains more than just
      *                   translation.