[exim-dev] typo in doc for Ratelimit options for what is bei…

http://exim.org/exim-html-current/doc/html/spec_html/ch-access_control_lists.html#ratoptmea
has the following duplication:

    The per_rcpt option causes Exim to limit the rate at which recipients are accepted. It can be used in the acl_smtp_rcpt, acl_smtp_predata, acl_smtp_mime, acl_smtp_data, or acl_smtp_rcpt ACLs.

The dupliaction is that acl_smtp_rcpt is mentioned twice.

u34