Fix SH v16 release notes path (#2570)

Author: heliocodacy

docs/release-notes/index.md

@@ -129,6 +129,10 @@ For product updates that are in progress or planned [visit the Codacy public roa
 
 ## Codacy Self-hosted release notes {: id="self-hosted"}
 
+v16
+
+-   [v16.0.0](self-hosted/self-hosted-v16.0.0.md) (January, 2026)
+
 v15
 
 -   [v15.0.0](self-hosted/self-hosted-v15.0.0.md) (April 10, 2025)

mkdocs.yml

@@ -777,6 +777,8 @@ nav:
                       - release-notes/cloud/cloud-2018-10-19.md
                       - release-notes/cloud/cloud-2018-07-23.md
           - Self-hosted:
+                - v16:
+                      - release-notes/self-hosted/self-hosted-v16.0.0.md
                 - v15:
                       - release-notes/self-hosted/self-hosted-v15.0.0.md
                 - v14: