Update events.html (#918)

events.html

@@ -256,7 +256,7 @@ <h2 id="2025-events">2025 Events</h2>
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       <td>2025-04-24 to 2025-04-25</td>
-      <td><a href="https://sosy2025.eu/">Solid Symposium 2025</a> (Leiden, Belgium)</td>
+      <td><a href="https://sosy2025.eu/">Solid Symposium 2025</a> (Leiden, The Netherlands)</td>
       <td><a href="https://www.universiteitleiden.nl/en">Leiden University</a></td>
       <td>The symposium provides a platform to discuss the current state of the art, share best practices, and exchange ideas for future innovations, with a special focus on cross-community collaboration, international perspectives, and the operational application of emerging technologies. Sosy2025 aims to gain insights from both science and industry.</td>
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