Update 'content/topic/listening-with-the-pandemic.md'

content/topic/listening-with-the-pandemic.md

@@ -1,7 +1,6 @@
 ---
 title: "Listening with the pandemic"
-has_experiments: ["living-with-a-black-box.md"]
-has_experiments: ["listening-to-the-body.md"]
+has_experiments: ["living-with-a-black-box.md", "listening-to-the-body.md"]
 ---
 ![ML](static/images/02.gif)