document error

Signed-off-by: Simon L <szaimen@e.mail.de>

core/Command/Maintenance/UpdateHtaccess.php

@@ -39,7 +39,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			$output->writeln('.htaccess has been updated');
 			return 0;
 		} else {
-			$output->writeln('<error>Error updating .htaccess file, not enough permissions or "overwrite.cli.url" set to an invalid URL?</error>');
+			$output->writeln('<error>Error updating .htaccess file, not enough permissions, not enough free space or "overwrite.cli.url" set to an invalid URL?</error>');
 			return 1;
 		}
 	}