fix(docs): Fix RST parsing of the sample config

Signed-off-by: Joas Schilling <coding@schilljs.com>

config/config.sample.php

@@ -141,7 +141,7 @@ $CONFIG = [
 /**
  * Enable persistent connexions to the database.
  * This setting uses the "persistent" option from doctrine dbal, which in turn
- *  uses the PDO::ATTR_PERSISTENT option from de pdo driver.
+ * uses the PDO::ATTR_PERSISTENT option from the pdo driver.
  */
 'dbpersistent' => '',
 
@@ -790,6 +790,7 @@ $CONFIG = [
  * The channel that Nextcloud should use to look for updates
  *
  * Supported values:
+ *
  * - ``daily``
  * - ``beta``
  * - ``stable``
@@ -1032,6 +1033,7 @@ $CONFIG = [
  * seen in the first-run wizard and on Personal pages.
  *
  * Defaults to:
+ *
  * - Desktop client: ``https://nextcloud.com/install/#install-clients``
  * - Android client: ``https://play.google.com/store/apps/details?id=com.nextcloud.client``
  * - iOS client: ``https://itunes.apple.com/us/app/nextcloud/id1125420102?mt=8``