feat: mention YT talks have human captions

Author: JoshuaKGoldberg

src/pages/articles/speaker-guide.astro

@@ -198,6 +198,10 @@ const title = "Speaker Guide";
 							"Will my talk be recorded?",
 							"Yes, we will edit and release on YouTube after the conference for free.",
 						],
+						[
+							"Will YouTube talk have captions generated by AI?",
+							"No, we manually caption our YouTube videos to make sure they're correct.",
+						],
 					],
 					title: "Photos & Videos",
 				},