man: Added description of fields pop3.uidl and text.utf8 to doveadm-fetch.1.
man: Added description of fields pop3.uidl and text.utf8 to doveadm-fetch.1.

jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch