Correct the PackageManager.checkSignatures documentation.

Make the documentation match the current behavior since change ID
Ibdeff170bd386d723f774136b18e0ad59d9cdabb.

Change-Id: I9d24800ba98f14cb278f029cdf37a086394d1747
diff --git a/core/java/android/os/Handler.java b/core/java/android/os/Handler.java
index 3b2bf1e..165e438 100644
--- a/core/java/android/os/Handler.java
+++ b/core/java/android/os/Handler.java
@@ -58,7 +58,7 @@
  * they create.  You can create your own threads, and communicate back with
  * the main application thread through a Handler.  This is done by calling
  * the same <em>post</em> or <em>sendMessage</em> methods as before, but from
- * your new thread.  The given Runnable or Message will than be scheduled
+ * your new thread.  The given Runnable or Message will then be scheduled
  * in the Handler's message queue and processed when appropriate.
  */
 public class Handler {