Fix build.

Change-Id: I3aeb4f374a99d5872ba19c04624aa1b5ca6cd5d0
diff --git a/core/java/android/service/wallpaper/WallpaperService.java b/core/java/android/service/wallpaper/WallpaperService.java
index 8000ad3..ccb8f1c 100644
--- a/core/java/android/service/wallpaper/WallpaperService.java
+++ b/core/java/android/service/wallpaper/WallpaperService.java
@@ -48,7 +48,7 @@
  * A wallpaper service is responsible for showing a live wallpaper behind
  * applications that would like to sit on top of it.  This service object
  * itself does very little -- its only purpose is to generate instances of
- * {@link WallpaperSerice.Engine} as needed.  Implementing a wallpaper thus
+ * {@link Engine} as needed.  Implementing a wallpaper thus
  * involves subclassing from this, subclassing an Engine implementation,
  * and implementing {@link #onCreateEngine()} to return a new instance of
  * your engine.