docs(readme): fix timestamp for presentation link

Author: tharropoulos

README.md

@@ -15,7 +15,7 @@ A terminal-based presentation tool that creates beautiful presentations from mar
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   <img src="https://github.com/user-attachments/assets/6548e4b7-d3f2-45ab-89af-100e3ef37087" alt="Kyma in action at Laravel Greece 10 year anniversary meetup in Athens" width=60%>
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-  <em>Kyma being used for a <a href="https://www.youtube.com/live/_R_sACr74bI?si=2PkDE8uXOvdN32nI&t=1067">talk</a> at Laravel Greece's 10 year anniversary meetup in Athens</em>
+  <em>Kyma being used for a <a href="https://www.youtube.com/live/_R_sACr74bI?si=LYM9sJ1vuItUO3cm&t=259">talk</a> at Laravel Greece's 10 year anniversary meetup in Athens</em>
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