fix header

content/topic/(against)-the-coming-world-of-listening-machines.md

@@ -1,6 +1,6 @@
 ---
 title: "(Against) the coming world of listening machines"
-has_experiments: ["living-with-a-black-box.md"; "diagnostic-listening.md"]
+has_experiments: ["living-with-a-black-box.md", "diagnostic-listening.md"]
 ---
 # (Against) the coming world of listening machines