Fix wrong name for driver options in docs

[alcaeus]

The docs use driverOptions as key in the connection config, but the connection class actually checks the driver_options key. Since the latter name has been in use for a while, I figured that the docs were wrong and updated the documentation so that the configuration is properly accepted.

[GromNaN]

Good catch.

laravel-mongodb/src/Connection.php

Lines 183 to 185 in 046b92a

	if (isset($config['driver_options']) && is_array($config['driver_options'])) {
	$driverOptions = $config['driver_options'];
	}

[friday-deployer]

Good to go

[norareidy]

LGTM