Updating doc link

Resolves https://github.com/wso2/product-iots/issues/1694

modules/distribution/src/core/release-notes.html

@@ -35,7 +35,7 @@
 
 <h4>Documentation</h4>
 
-Documentations: <a href='https://docs.wso2.com/display/IoTS310/WSO2+IoT+Server+Documentation'> WSO2 IoT Server Documentation</a> 
+Documentations: <a href='https://docs.wso2.com/display/IoTS320/WSO2+IoT+Server+Documentation'> WSO2 IoT Server Documentation</a>
 
 <h4>Known Issues</h4>