Update changelog for v2.3.1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: captbaritone

packages/webamp-docs/docs/12_changelog.md

@@ -10,12 +10,18 @@ If you want access to the changes in this section before they are officially rel
 :::
 -->
 
-## 2.3.0
+## 2.3.1
 
 :::info
 This is the current version of Webamp.
 :::
 
+### Bug Fixes
+
+- Fix `Webamp.VERSION` reporting `"2.2.0"` instead of the correct version.
+
+## 2.3.0
+
 ### Improvements
 
 - Added a new Webamp instance method: [`webamp.renderInto(domNode)`](./06_API/03_instance-methods.md#renderintodomnode-htmlelement-promisevoid). Which renders Webamp as a _child_ of the provided DOM node, rather than within its own top-level container.