Update config comment to reflect rfc8314.

.env.template

@@ -352,7 +352,7 @@
 # SMTP_FROM=vaultwarden@domain.tld
 # SMTP_FROM_NAME=Vaultwarden
 # SMTP_SECURITY=starttls # ("starttls", "force_tls", "off") Enable a secure connection. Default is "starttls" (Explicit - ports 587 or 25), "force_tls" (Implicit - port 465) or "off", no encryption (port 25)
-# SMTP_PORT=587          # Ports 587 (submission) and 25 (smtp) are standard without encryption and with encryption via STARTTLS (Explicit TLS). Port 465 is outdated and used with Implicit TLS.
+# SMTP_PORT=587          # Ports 587 (submission), 465 (submissions) and 25 (smtp) are standard without encryption and with encryption ports, 587 use STARTTLS (Explicit encryption) and 465 use native TLS (Implicit encryption)
 # SMTP_USERNAME=username
 # SMTP_PASSWORD=password
 # SMTP_TIMEOUT=15