Fix the build

add '*' so javadoc recognizes a comment block and finds the required @hide..

Change-Id: If665ba6549f9e017c063ea2800b7970917c33bdf

core/java/android/net/ConnectivityManager.java

@@ -584,7 +584,7 @@ public class ConnectivityManager
         }
     }
 
-    /*
+    /**
      * @param networkType The type of network you want to report on
      * @param percentage The quality of the connection 0 is bad, 100 is good
      * {@hide}