Improve resource string (#16691)

* Improve resource string

Co-authored-by: zeripath <[email protected]>

Author: delvh

options/locale/locale_en-US.ini

@@ -2432,7 +2432,7 @@ auths.allowed_domains = Allowed Domains
 auths.allowed_domains_helper = Leave empty to allow all domains. Separate multiple domains with a comma (',').
 auths.skip_tls_verify = Skip TLS Verify
 auths.force_smtps = Force SMTPS
-auths.force_smtps_helper = By default SMTPS will be used for port 465, set this to use smtps on other ports, otherwise STARTTLS is used if supported.
+auths.force_smtps_helper = SMTPS is always used on port 465. Set this to force SMTPS on other ports. (Otherwise STARTTLS will be used on other ports if it is supported by the host.)
 auths.helo_hostname = HELO Hostname
 auths.helo_hostname_helper = Hostname sent with HELO. Leave blank to send current hostname.
 auths.disable_helo = Disable HELO