docs: expand bugfix description for #230 in CHANGELOG

Expands the description to make it more clear that this affects
`Collection` instances only, and what the new behavior is.

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.14.1 - TBD
+## 2.14.1 - 2019-02-26
 
 ### Added
 
@@ -22,7 +22,9 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- [#230](https://github.com/zendframework/zend-form/pull/230) fixes the "__clone method called on non-object" error that happens when the targetElement is null.
+- [#230](https://github.com/zendframework/zend-form/pull/230) fixes the "`__clone` method called on non-object" error that happens when
+  the `$targetElement` is `null` within a `Collection` instance. It now properly
+  sets the data to an empty array in such circumstances.
 
 ## 2.14.0 - 2019-01-07