docs: update changelog for server MTP alignment

Author: abetlen

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- feat(example): align server MTP support with llama.cpp by @abetlen in #2283
 - feat: update llama.cpp to ggml-org/llama.cpp@9e3b928fd
 - feat(example): add OpenAI-compatible embeddings endpoint by @abetlen in #2281