changed "in" to "of" in DNS_R_SINGLETON, "multiple RRs of singleton type"
changed "in" to "of" in DNS_R_SINGLETON, "multiple RRs of singleton type"

pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab