Fix missing comma in cli-help

packages/server/src/cli.ts

@@ -28,7 +28,7 @@ commander.version(process.env.VERSION || "development")
 	.option("-e, --extensions-dir <dir>", "Override the main default path for user extensions.")
 	.option("--extra-extensions-dir [dir]", "Path to an extra user extension directory (repeatable).", collect, [])
 	.option("--extra-builtin-extensions-dir [dir]", "Path to an extra built-in extension directory (repeatable).", collect, [])
-	.option("-d --user-data-dir <dir>", "Specifies the directory that user data is kept in, useful when running as root.")
+	.option("-d, --user-data-dir <dir>", "Specifies the directory that user data is kept in, useful when running as root.")
 	.option("--data-dir <value>", "DEPRECATED: Use '--user-data-dir' instead. Customize where user-data is stored.")
 	.option("-h, --host <value>", "Customize the hostname.", "0.0.0.0")
 	.option("-o, --open", "Open in the browser on startup.", false)