Fix @example tag in javadoc

This was causing a StringIndexOutOfBoundsException when generating
the javadoc.

Change-Id: Ib17994f7a65058c663c4a884a9bf7cba48396e09

user/src/com/google/gwt/user/server/rpc/RPC.java

diff --git a/user/src/com/google/gwt/user/server/rpc/RPC.java b/user/src/com/google/gwt/user/server/rpc/RPC.java
index 1f145b5..20a7a58 100644
--- a/user/src/com/google/gwt/user/server/rpc/RPC.java
+++ b/user/src/com/google/gwt/user/server/rpc/RPC.java
@@ -52,7 +52,7 @@
  * <h3>Advanced Example</h3> The following example shows a more advanced way of
  * using this class to create an adapter between GWT RPC entities and POJOs.
  * 
- * {@example com.google.gwt.examples.rpc.server.AdvancedExample#doPost}
+ * {@example com.google.gwt.examples.rpc.server.AdvancedExample#doPost(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)}
  */
 public final class RPC {