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.
diff: @@ -145,6 +145,10 @@ static RPCHelpMan getpeerinfo()
  }},
  {RPCResult::Type::BOOL, "whitelisted", /* optional */ true, "Whether the peer is whitelisted with default permissions\n"
  "(DEPRECATED, returned only if config option -deprecatedrpc=whitelisted is passed)"},
  + {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", "",
  {
  