Update people.md

Author: OttoTarkka

people.md

@@ -190,7 +190,7 @@ title: People
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-            <span class="image"><img src="assets/images/saara_hellstrom.png" alt="Saara Hellström" /></span>
+            <span class="image"><img src="assets/images/saara_hellstrom2025.jpg" alt="Saara Hellström" /></span>
             <div class="content">
 	    	<h3><a href="https://www.utu.fi/en/people/saara-hellstrom">Saara Hellström</a></h3>
 			<h4>Doctoral researcher</h4>