Merge pull request #6096 from fonsp/patch-1

devtools/test_dashboard: tweak ES6 import

Author: archmoj

devtools/test_dashboard/index.html

@@ -21,7 +21,7 @@
   <div id="snapshot"></div>
 
   <script src="../../node_modules/mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>
-  <script charset="utf-8" id="source"  type="module">import "../../build/plotly.js"</script>
+  <script charset="utf-8" id="source" src="../../build/plotly.js" type="module"></script>
   <script charset="utf-8" src="../../build/test_dashboard-bundle.js"></script>
 </body>
 </html>