CHANGELOG updates for mermaid (#1816)

CHANGELOG.md

@@ -40,17 +40,21 @@ For the full list of changes, see the [0.9.0] release notes.
 
 - Docsy statically generates anchor-links after headings using Hugo's
   [render-heading.html](https://gohugo.io/templates/render-hooks/) hook. This is
-  potentially a breaking change for projects that override the hook.
+  _potentially_ a breaking change for projects that override the hook.
 
 **Other changes**:
 
+- The latest release of [Mermaid] resources are fetch at build time ([#1410])
 - Docsy follows recommended accessibility practice: page-body links are
   underlined. For details, see [#1814] and [#1815].
 
 [0.9.0]: https://github.com/google/docsy/releases/latest?FIXME=v0.9.0
+[#1410]: https://github.com/google/docsy/pull/1410
 [#1744]: https://github.com/google/docsy/pull/1744
 [#1814]: https://github.com/google/docsy/issues/1814
 [#1815]: https://github.com/google/docsy/pull/1815
+[mermaid]:
+  https://www.docsy.dev/docs/adding-content/diagrams-and-formulae/#diagrams-with-mermaid
 [multi-language]: https://www.docsy.dev/docs/language/
 [path_base_for_github_subdir]:
   https://www.docsy.dev/docs/adding-content/repository-links/#path_base_for_github_subdir-optional