Update index.md

index.md

@@ -140,7 +140,7 @@ The goal is that by the end of the workshop you will have a dataset in a final s
     <img src="{{ '/fig/img6.jpg' | relative_url }}" alt="Hands on" width="200">
   </a>
   <a href="https://biodiversity.be/">
-    <img src="{{ '/fig/img7.jpg' | relative_url }}" alt="Group picture" width="400">
+    <img src="{{ '/fig/img7.JPG' | relative_url }}" alt="Group picture" width="400">
   </a>
   <a href="https://mingor.gov.hr/">
     <img src="{{ '/fig/img8.jpg' | relative_url }}" alt="Hands on" width="200">