chore: add changelog note

docs/pages/resources/changelog.md

@@ -12,6 +12,10 @@ Components with the <sl-badge variant="warning" pill>Experimental</sl-badge> bad
 
 New versions of Shoelace are released as-needed and generally occur when a critical mass of changes have accumulated. At any time, you can see what's coming in the next release by visiting [next.shoelace.style](https://next.shoelace.style).
 
+## Next
+
+- Fixed a bug in `<sl-split-panel>` that caused it not to recalculate it's position when going from being `display: none;` to its original display value. [#]
+
 ## 2.15.0
 
 - Added the Slovenian translation [#1893]
@@ -1738,4 +1742,4 @@ The following pages demonstrate why this change was necessary.
 
 ## 2.0.0-beta.1
 
-- Initial release
+- Initial release