doc: Use precise permission flags where possible

doc/reduce-traffic.md

@@ -50,7 +50,7 @@ Be reminded of the effects of this setting.
   Doing so disables the automatic broadcasting of transactions from wallet. Not
   relaying other's transactions could hurt your privacy if used while a wallet
   is loaded or if you use the node to broadcast transactions.
-- If a peer is whitelisted and "-whitelistforcerelay" is set to "1" (which will
-  also set "whitelistrelay" to "1"), we will still receive and relay their transactions.
+- If a peer has the forcerelay permission, we will still receive and relay
+  their transactions.
 - It makes block propagation slower because compact block relay can only be
   used when transaction relay is enabled.