Update 'content/curriculum/index.md'

content/curriculum/index.md

@@ -1,6 +1,6 @@
 ---
 title: "Machine Listening"
-has_topics: ["against-the-coming-world-of-listening-machines.md", "lessons-in-how-not-to-be-heard.md", "listening-with-the-pandemic.md", "massive-device-orchestration.md"]
+has_topics: ["against-the-coming-world-of-listening-machines.md", "lessons-in-how-(not)-to-be-heard.md", "listening-with-the-pandemic.md", "massive-device-orchestration.md"]
 ---
 
 # Machine Listening, a curriculum