Update README.md

Author: MarcoMinghini

training material/2024-05-31 JRC Training/README.md

@@ -5,3 +5,5 @@ The training materials on the ETF and INSPIRE Reference Validator included in th
 * Introduction to ETF and the INSPIRE Reference Validator: a business perspective [[slides](INSPIRE%20Reference%20Validator%20-%20Intro%20business.pdf), [video](https://www.youtube.com/watch?v=BVWxWuo9X5g&list=PLtvJPnZpinhfv3HXkjAOEbTTCSSEE5d7E)]
 * Introduction to ETF and the INSPIRE Reference Validator: a technical perspective [[slides](INSPIRE%20Reference%20Validator%20-%20Intro%20technical.pdf), [video](https://www.youtube.com/watch?v=b2WwuBYN1dE&list=PLtvJPnZpinhfv3HXkjAOEbTTCSSEE5d7E&index=3)]
 * Starter Kit on ETF and the INSPIRE Reference Validator for users, developers and admins [[slides](INSPIRE%20Reference%20Validator%20-%20Starter%20Kit.pdf), [video](https://www.youtube.com/watch?v=CeO7fUEiOeM&list=PLtvJPnZpinhfv3HXkjAOEbTTCSSEE5d7E&index=4)]
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+The playlist including all three videos is available [here](https://www.youtube.com/watch?v=BVWxWuo9X5g&list=PLtvJPnZpinhfv3HXkjAOEbTTCSSEE5d7E).