Add link to regenerated documentation

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

Author: ajnelson-nist

releases/1.4.0/index.md

@@ -40,3 +40,11 @@ custom_css: releases
 
 
 ## Documentation
+
+Generated documentation is available at this site:
+
+[https://ontology.caseontology.org/](https://ontology.caseontology.org/)
+
+Be aware that the documentation at that site will only show the most recent release.  The upper-left corner of the documentation pages shows the ontology version being reviewed.
+
+Users interested in seeing the rendered documentation at this version "Back in time" should locally clone the ontology documentation repository, checking out [this branch](https://github.com/casework/ontology.caseontology.org/tree/archive/release-1.4.0), and follow the deployment directions in `CONTRIBUTE.md`.