Clarification of NextDNS logging policy (#2434)

Co-authored-by: Jonah Aragon <jonah@triplebit.net>
Signed-off-by: Daniel Gray <dngray@privacyguides.org>

docs/dns.md

@@ -24,7 +24,7 @@ Encrypted DNS with third-party servers should only be used to get around basic [
 [^2]: Cloudflare collects and stores only the limited DNS query data that is sent to the 1.1.1.1 resolver. The 1.1.1.1 resolver service does not log personal data, and the bulk of the limited non-personally identifiable query data is stored only for 25 hours. [https://developers.cloudflare.com/1.1.1.1/privacy/public-dns-resolver/](https://developers.cloudflare.com/1.1.1.1/privacy/public-dns-resolver)
 [^3]: Control D only logs for Premium resolvers with custom DNS profiles. Free resolvers do not log data. [https://controld.com/privacy](https://controld.com/privacy)
 [^4]: Mullvad's DNS service is available to both subscribers and non-subscribers of Mullvad VPN. Their privacy policy explicitly claims they do not log DNS requests in any way. [https://mullvad.net/en/help/no-logging-data-policy/](https://mullvad.net/en/help/no-logging-data-policy)
-[^5]: NextDNS can provide insights and logging features on an opt-out basis. You can choose retention times and log storage locations for any logs you choose to keep. If it's not specifically requested, no data is logged. [https://nextdns.io/privacy](https://nextdns.io/privacy)
+[^5]: When used with an account, NextDNS will enable insights and logging features by default (as some features require it). You can choose retention time and log storage location for any logs you choose to keep, or disable logs altogether. If used without an account, no data is logged. [https://nextdns.io/privacy](https://nextdns.io/privacy)
 [^6]: Quad9 collects some data for the purposes of threat monitoring and response. That data may then be remixed and shared, such as for the purpose of security research. Quad9 does not collect or record IP addresses or other data they deem personally identifiable. [https://quad9.net/privacy/policy](https://quad9.net/privacy/policy)
 
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