Adding demo video about testing time-dependent functionalities and he…

…adless Orchard Core using the Lombiq UI Testing Toolbox to the docs

Readme.md

@@ -27,6 +27,7 @@ Highlights:
 - If your app uses a camera, a fake video capture source in Chrome is supported. [Here's a demo video of the feature](https://www.youtube.com/watch?v=sGcD0eJ2ytc), and check out the docs [here](Lombiq.Tests.UI/Docs/FakeVideoCaptureSource.md).
 - Interactive mode for debugging the app while the test is paused. [Here's a demo of the feature](Lombiq.Tests.UI.Samples/Tests/InteractiveModeTests.cs), and a [demo video here](https://www.youtube.com/watch?v=ItNltaruWTY).
 - Security scanning with [Zed Attack Proxy (ZAP)](https://www.zaproxy.org/), the world's most widely used web app security scanner, right from UI tests. See a demo video [here](https://www.youtube.com/watch?v=iUYivLkFbY4).
+- Testing time-dependent functionalities and headless Orchard Core using the Lombiq UI Testing Toolbox. See a demo video [here](https://www.youtube.com/watch?v=eK2C9BW98sM).
 
 See a demo video of the project [here](https://www.youtube.com/watch?v=mEUg6-pad-E), and the Orchard Harvest 2023 conference talk about automated QA in Orchard Core [here](https://youtu.be/CHdhwD2NHBU). We also had an Orchard Harvest 2024 talk about security scanning [here](https://www.youtube.com/watch?v=FsOpo8EA4wE). Also, see our [Testing Toolbox](https://github.com/Lombiq/Testing-Toolbox) for similar features for lower-level tests.