Fix javadoc of ResourceConfig#addProperties

Minor typo (i.e. "...he values of existing properties...").

Author: fabriziocucci

core-server/src/main/java/org/glassfish/jersey/server/ResourceConfig.java

@@ -386,8 +386,8 @@ public ResourceConfig(final ResourceConfig original) {
     /**
      * Add properties to {@code ResourceConfig}.
      * <p/>
-     * If any of the added properties exists already, he values of the existing
-     * properties will be replaced with new values.
+     * If any of the added properties exists already, old values of existing
+     * properties will be replaced by new values.
      *
      * @param properties properties to add.
      * @return updated resource configuration instance.