Update README.md with release roadmap info (#22486)

The ONNX Runtime Release Roadmap on our website is not very easy to find
right now, so I'm adding a link here to make it more accessible.

### Description
<!-- Describe your changes. -->



### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

---------

Co-authored-by: Tianlei Wu <[email protected]>

README.md

@@ -14,7 +14,7 @@
 
 * **YouTube video tutorials**: [youtube.com/@ONNXRuntime](https://www.youtube.com/@ONNXRuntime)
 
-* [**Upcoming Release Roadmap**](https://github.com/microsoft/onnxruntime/wiki/Upcoming-Release-Roadmap)
+* [**Upcoming Release Roadmap**](https://onnxruntime.ai/roadmap)
 
 * **Companion sample repositories**:
   - ONNX Runtime Inferencing: [microsoft/onnxruntime-inference-examples](https://github.com/microsoft/onnxruntime-inference-examples)
@@ -40,6 +40,12 @@ This project is tested with [BrowserStack](https://www.browserstack.com/home).
 |---|---|---|
 |Linux|[![Build Status](https://github.com/Ascend/onnxruntime/actions/workflows/build-and-test.yaml/badge.svg)](https://github.com/Ascend/onnxruntime/actions/workflows/build-and-test.yaml)||
 
+## Releases
+
+The current release and past releases can be found here: https://github.com/microsoft/onnxruntime/releases.
+
+For details on the upcoming release, including release dates, announcements, features, and guidance on submitting feature requests, please visit the release roadmap: https://onnxruntime.ai/roadmap.
+
 ## Data/Telemetry
 
 Windows distributions of this project may collect usage data and send it to Microsoft to help improve our products and services. See the [privacy statement](docs/Privacy.md) for more details.