fix: cabforum#502 Remove extraneous "for either"

docs/BR.md

@@ -782,7 +782,7 @@ This method has been retired and MUST NOT be used. Prior validations using this
 
 ##### 3.2.2.4.7 DNS Change
 
-Confirming the Applicant's control over the FQDN by confirming the presence of a Random Value or Request Token for either in a DNS CNAME, TXT or CAA record for either 1) an Authorization Domain Name; or 2) an Authorization Domain Name that is prefixed with a Domain Label that begins with an underscore character.
+Confirming the Applicant's control over the FQDN by confirming the presence of a Random Value or Request Token in a DNS CNAME, TXT or CAA record for either 1) an Authorization Domain Name; or 2) an Authorization Domain Name that is prefixed with a Domain Label that begins with an underscore character.
 
 If a Random Value is used, the CA SHALL provide a Random Value unique to the Certificate request and SHALL not use the Random Value after