fix javadoc

Signed-off-by: olivier lamy <olamy@webtide.com>

jetty-util/src/main/java/org/eclipse/jetty/util/AtomicBiInteger.java

@@ -46,6 +46,7 @@ public class AtomicBiInteger extends AtomicLong
      * Atomically set the hi integer value without changing
      * the lo value. 
      * @param hi the new hi value
+     * @return the hi int value
      */
     public int setHi(int hi)
     {

jetty-util/src/main/java/org/eclipse/jetty/util/ProcessorUtils.java

@@ -19,7 +19,7 @@
 package org.eclipse.jetty.util;
 
 /**
- * ProcessorUtils return the default value for processor number fron {@link Runtime#getRuntime()#availableProcessors()}
+ * ProcessorUtils return the default value for processor number from {@link Runtime}
  * but in a virtual environment you can override it using env var <code>JETTY_AVAILABLE_PROCESSORS</code>
  */
 public class ProcessorUtils
@@ -42,6 +42,10 @@ public class ProcessorUtils
         }
     }
 
+    /**
+     *
+     * @return the number of processors
+     */
     public static int availableProcessors()
     {
         return AVAILABLE_PROCESSORS;