opts: update references to renamed options

docs/libcurl/opts/CURLOPT_FTP_FILEMETHOD.3

@@ -59,4 +59,4 @@ Added in 7.15.1
 .SH RETURN VALUE
 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
 .SH "SEE ALSO"
-.BR CURLOPT_FTPLISTONLY "(3), " CURLOPT_FTP_SKIP_PASV_IP "(3), "
+.BR CURLOPT_DIRLISTONLY "(3), " CURLOPT_FTP_SKIP_PASV_IP "(3), "

docs/libcurl/opts/CURLOPT_KRBLEVEL.3

@@ -45,4 +45,4 @@ This option was known as CURLOPT_KRB4LEVEL up to 7.16.3
 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
 .SH "SEE ALSO"
-.BR CURLOPT_KRBLEVEL "(3), " CURLOPT_FTP_SSL "(3), "
+.BR CURLOPT_KRBLEVEL "(3), " CURLOPT_USE_SSL "(3), "