feat: Update roadmap.md (feast-dev#4445)

Author: franciscojavierarceo

docs/roadmap.md

@@ -42,6 +42,7 @@ The list below contains the functionality that contributors are planning to deve
   * [x] On-demand Transformations (Beta release. See [RFC](https://docs.google.com/document/d/1lgfIw0Drc65LpaxbUu49RCeJgMew547meSJttnUqz7c/edit#))
   * [x] Streaming Transformations (Alpha release. See [RFC](https://docs.google.com/document/d/1UzEyETHUaGpn0ap4G82DHluiCj7zEbrQLkJJkKSv4e8/edit))
   * [ ] Batch transformation (In progress. See [RFC](https://docs.google.com/document/d/1964OkzuBljifDvkV-0fakp2uaijnVzdwWNGdz7Vz50A/edit))
+  * [ ] Persistent On-demand Transformations (Beta release. See [GitHub Issue](https://github.com/feast-dev/feast/issues/4376))
 * **Streaming**
   * [x] [Custom streaming ingestion job support](https://docs.feast.dev/how-to-guides/customizing-feast/creating-a-custom-provider)
   * [x] [Push based streaming data ingestion to online store](https://docs.feast.dev/reference/data-sources/push)
@@ -63,3 +64,6 @@ The list below contains the functionality that contributors are planning to deve
   * [x] Amundsen integration (see [Feast extractor](https://github.com/amundsen-io/amundsen/blob/main/databuilder/databuilder/extractor/feast_extractor.py))
   * [x] DataHub integration (see [DataHub Feast docs](https://datahubproject.io/docs/generated/ingestion/sources/feast/))
   * [x] Feast Web UI (Beta release. See [docs](https://docs.feast.dev/reference/alpha-web-ui))
+  * [ ] Feast Lineage Explorer
+* **Natural Language Processing**
+  * [x] Vector Search (Alpha release. See [RFC](https://docs.google.com/document/d/18IWzLEA9i2lDWnbfbwXnMCg3StlqaLVI-uRpQjr_Vos/edit#heading=h.9gaqqtox9jg6))