documentation update

Author: DanCunnington

services/retrieve_and_rank/v1.html

@@ -78,7 +78,7 @@
 
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 <p>The IBM Watson™ Retrieve and Rank service combines two information retrieval components in a single service: the power of Apache Solr and a sophisticated machine learning capability. This combination provides users with more relevant results by automatically reranking them by using these machine learning algorithms.</p>
-    <p>The create cluster node provisions a Solr cluster. You can specify the <b>size</b> of the cluster in the node configuration panel. For a small free cluster for testing choose the “Free” option. For more information about cluster sizing, see <a href="http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/retrieve-rank/solr_ops.shtml#sizing">Sizing your Retrieve and Rank cluster</a>. A <b>cluster name</b> can also be specified in the node configuration panel.</p>
+    <p>The create cluster node provisions a Solr cluster. You can specify the <b>size</b> of the cluster in the node configuration panel. For a small free cluster for testing choose the “Free” option. For more information about cluster sizing, see <a href="http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/retrieve-rank/solr_ops.shtml#sizing">Sizing your Retrieve and Rank cluster</a>. A <b>cluster name</b> can be specified in the node configuration panel or passed in on <code>msg.payload</code>. The cluster name specified in the node configuration panel takes priority.</p>
     <p>The cluster will then be created. This takes a short while to complete. When the cluster is available, the status underneath the node will change to <b>“Cluster available”</b>.</p>
     <p>For more information about the Retrieve and Rank service, read the <a href="https://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/retrieve-rank.html">documentation</a>.</p>
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