docs: Correct copy/paste error in AppWidgetProviderInfo.minWidth()

The summary fragment said minWidth() gives the default height, should
say default width. Probably came from a copy/paste from minHeight.

Change-Id: I1ace663b28c36e1cf46252a8cc2d39b3770efefa
Test: [go/abtd build]
Fixes: 143855176

core/java/android/appwidget/AppWidgetProviderInfo.java

@@ -143,7 +143,7 @@ public class AppWidgetProviderInfo implements Parcelable {
     public ComponentName provider;
 
     /**
-     * The default height of the widget when added to a host, in px. The widget will get
+     * The default width of the widget when added to a host, in px. The widget will get
      * at least this width, and will often be given more, depending on the host.
      *
      * <p>This field corresponds to the <code>android:minWidth</code> attribute in