Link to diff of changes

sample-site/migrations/expression-atlas/index.html

@@ -2,5 +2,5 @@
     <li>1) Here we see the "current" site as an exported static entity</li>
     <li>(here's <a href="http://www.ebi.ac.uk/gxa/experiments/E-MTAB-4401?_specific=on&queryFactorType=ORGANISM_PART&queryFactorValues=leaf&geneQuery=&exactMatch=true">the page on the live site</a>)</li>
     <li>2) The migrated version</li>
-    <li>Supplement) Diff of the changes</li>
+    <li>Supplement) Diff of the changes: https://github.com/khawkins98/EBI-Framework/commit/a49d3668f2b80058be8c277d875c8b06f47a7237</li>
 </ul>
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