Fix javadoc typo

Use @return, not @returns

Change-Id: I6c8fab2d236cf9c68c79090d3830bc3e01c8aa6f
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index b24b932..209c536 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -2069,7 +2069,7 @@
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
      * @param intent An intent matching the app(s) to be installed. All apps that resolve for this
      *               intent will be re-enabled in the current profile.
-     * @returns int The number of activities that matched the intent and were installed.
+     * @return int The number of activities that matched the intent and were installed.
      */
     public int enableSystemApp(ComponentName admin, Intent intent) {
         if (mService != null) {