add link to old changelog

Author: dennisvang

docs/development/changelog.rst

@@ -2,8 +2,10 @@
 Changelog
 *********
 
-Changes to FAIR Data Point repositories are tracked via GitHub releases:
+As of v1.17, changes to FAIR Data Point repositories are tracked via GitHub releases:
 
 - `Documentation changelog <https://github.com/FAIRDataTeam/FAIRDataPoint-Docs/releases>`_
 - `Back-end/API changelog <https://github.com/FAIRDataTeam/FAIRDataPoint/releases>`_
 - `Client changelog <https://github.com/FAIRDataTeam/FAIRDataPoint-client/releases>`_
+
+For v1.16 and older, refer to the `v1.16 changelog <https://github.com/FAIRDataTeam/FAIRDataPoint-Docs/blob/03627e40621501ad3be50f69d2b4e326636bc53f/docs/development/changelog.rst>`_.