message: [doc] Add permissions to the getpeerinfo help.
  This field was already being returned, but the RPCHelpMan did not indicate
  this. So, this PR updates the help text to match.
  Github-Pull:
  Rebased-From:
diff: @@ -117,6 +117,10 @@ static UniValue getpeerinfo(const JSONRPCRequest& request)
  {RPCResult::Type::NUM, "n", "The heights of blocks we're currently asking from this peer"},
  }},
  {RPCResult::Type::BOOL, "whitelisted", "Whether the peer is whitelisted"},
  + {RPCResult::Type::ARR, "permissions", "Any special permissions that have been granted to this peer",
  + {
  + {RPCResult::Type::STR, "permission_type", Join(NET_PERMISSIONS_DOC, ",\n") + ".\n"},
  + }},
  {RPCResult::Type::NUM, "minfeefilter", "The minimum fee rate for transactions this peer accepts"},
  {RPCResult::Type::OBJ_DYN, "bytessent_per_msg", "",
  {
  