Update content-tracing module

github-electron/github-electron.content-tracing.d.ts

@@ -4,7 +4,11 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare namespace Electron {
-
+	/**
+	 * The content-tracing module is used to collect tracing data generated by the underlying Chromium content module.
+	 * This module does not include a web interface so you need to open chrome://tracing/
+	 * in a Chrome browser and load the generated file to view the result.
+	 */
 	interface ContentTracing {
 		/**
 		 * Get a set of category groups. The category groups can change as new code paths are reached.