Clarify.

wiki/src/contribute/working_together/roles/sysadmins.mdwn

@@ -111,7 +111,7 @@ The main tools used to manage the Tails infrastructure are:
 
 # Communication
 
-A few people have write access to the puppetmasters, and can log into
+Tails system administrators have write access to the puppetmasters, and can log into
 the hosts.  
 They read the <tails-sysadmins@boum.org> encrypted mailing list.