Document that AD url is a list #32830
Description
https://www.elastic.co/guide/en/elasticsearch/reference/6.3/security-settings.html#ref-ad-settings implies that url takes a single URL, but like the LDAP realm, it's actually a list.
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https://www.elastic.co/guide/en/elasticsearch/reference/6.3/security-settings.html#ref-ad-settings implies that url takes a single URL, but like the LDAP realm, it's actually a list.