Use correct <a> tag syntax in javadoc @see tag

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=137946021

javatests/google/registry/testing/DatastoreHelper.java

@@ -909,8 +909,6 @@ public class DatastoreHelper {
   /**
    * Like persistResource but for multiple entities, with no helper for saving
    * ForeignKeyedEppResources.
-   *
-   * @see "http://docs.objectify-appengine.googlecode.com/git/apidocs/com/googlecode/objectify/cmd/Loader.htmls#entities(java.lang.Iterable)"
    */
   public static <R> ImmutableList<R> persistSimpleResources(final Iterable<R> resources) {
     ofy().transact(new VoidWork(){