fixed pic link for jeff

participants/jeff-thompson/index.html

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 title : Jeff Thompson
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 <h3>Jeff Thompson</h3>
-<img src="IR_CameraSelfPortrait_256x256.png" />
+<img src="IR_CameraSelfPortrait_256x256.jpg" />
 <p><a href="http://www.jeffreythompson.org/" target="_blank">Website</a> | <a href="https://twitter.com/jeffthompson_" target="_blank">Twitter</a></p>
 <p>Jeff Thompson is an artist, programmer, hacker, and educator based in the NYC area. He is currently Assistant Professor and Program Director of Visual Art &amp; Technology at the Stevens Institute of Technology in Hoboken, New Jersey and artist-in-residence at Bell Labs.</p>