InlinePanel DOM events - add versionadded admonition

docs/reference/pages/panels.md

@@ -115,6 +115,10 @@ Here are some built-in panel types that you can use in your panel definitions. T
 
 You may want to execute some JavaScript when `InlinePanel` items are ready, added or removed. The `w-formset:ready`, `w-formset:added` and `w-formset:removed` events allow this.
 
+```{versionadded} 5.2
+
+```
+
 For example, given a child model that provides a relationship between Blog and Person on `BlogPage`.
 
 ```python