sserial manpage: fix connector description

Author: SebKuzminsky

docs/man/man9/sserial.9

@@ -15,7 +15,7 @@ This is set using the sserial_port_N= option in the hm2_pci modparam. See the ho
 It is likely that this documentation will be permanently out of date.
 
 Each Anything-IO board can attach up to 8 sserial remotes to each header
-(either the 5-pin headers on the 5I20/5I22/5I23/7I43 or the 25-pin connectors on the 5I25, 6I25 and 7I80).
+(either the 50-pin headers on the 5I20/5I22/5I23/7I43 or the 25-pin connectors on the 5I25, 6I25 and 7I80).
 The remotes are grouped into "ports" of up to 8 "channels".
 Typically each header will be a single 8 channel port, but this is not necessarily always the case.