Update collections/CHANGELOG.md

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: facundomedica

collections/CHANGELOG.md

@@ -36,7 +36,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [#19343](https://github.com/cosmos/cosmos-sdk/pull/19343)  Simplify IndexedMap creation by allowing to infer indexes through reflection.
 * [#18933](https://github.com/cosmos/cosmos-sdk/pull/18933)  Add  LookupMap implementation. It is basic wrapping of the standard Map methods but is not iterable.
 * [#17656](https://github.com/cosmos/cosmos-sdk/pull/17656)  Introduces `Vec`, a collection type that allows to represent a growable array on top of a KVStore.
-* []() Add `NewJSONValueCodec` value codec as an alternative for `codec.CollValue` from the SDK for non protobuf types.
+* [#19861](https://github.com/cosmos/cosmos-sdk/pull/19861) Add `NewJSONValueCodec` value codec as an alternative for `codec.CollValue` from the SDK for non protobuf types.
 
 ## [v0.4.0](https://github.com/cosmos/cosmos-sdk/releases/tag/collections%2Fv0.4.0)