Broader description that would include inline buttons (microsoft#223426)

Fixes microsoft#223338

Author: TylerLeonhardt

src/vscode-dts/vscode.d.ts

@@ -12433,7 +12433,7 @@ declare module 'vscode' {
 		buttons: readonly QuickInputButton[];
 
 		/**
-		 * An event signaling when a button in the title bar was triggered.
+		 * An event signaling when a top level button (buttons stored in {@link buttons}) was triggered.
 		 * This event does not fire for buttons on a {@link QuickPickItem}.
 		 */
 		readonly onDidTriggerButton: Event<QuickInputButton>;