update url for HDP sandbox download

tutorials/hdp/setting-up-a-spark-development-environment-with-scala/tutorial.md

@@ -21,7 +21,7 @@ This tutorial will teach you how to set up a full development environment for de
 
 ## Prerequisites
 
-- Downloaded and deployed the [Hortonworks Data Platform (HDP)](https://hortonworks.com/downloads/#sandbox) Sandbox
+- Downloaded and deployed the [Hortonworks Data Platform (HDP)](https://www.cloudera.com/downloads/hortonworks-sandbox/hdp.html) Sandbox
 - Basic [Scala](http://www.dhgarrette.com/nlpclass/scala/basics.html) syntax
 - Installed [IntelliJ](https://www.jetbrains.com/idea/)
 - Installed [Java Development Kit (JDK)](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html)
@@ -386,4 +386,4 @@ We have installed the needed dependencies and Integrated Developing Environment
 - [Setting up a Spark Development Environment with Python](https://hortonworks.com/tutorial/setting-up-a-spark-development-environment-with-python/)
 - [Setting up a Spark Development Environment with Java](https://hortonworks.com/tutorial/setting-up-a-spark-development-environment-with-java/)
 - [Hortonworks Community Connection (HCC)](https://community.hortonworks.com/spaces/85/data-science.html?type=question)
-- [Spark Tutorials](https://hortonworks.com/tutorials/?tab=product-hdp&filters=apache-spark)
+- [Spark Tutorials](https://hortonworks.com/tutorials/?tab=product-hdp&filters=apache-spark)