Daemon-rpc doc: Add correct output description for /sendrawtransaction

Created by: cryptoshrimpi

URL: https://getmonero.org/knowledge-base/developer-guides/daemon-rpc#sendrawtransaction

The output of /sendrawtransaction is described as:

Outputs:

• status - string; General RPC error code. "OK" means everything looks good.

In Monero v0.10.1.0 the actual output for an invalid tx_as_hex input value such as 'abc' is

{ double_spend: false,
  fee_too_low: false,
  invalid_input: false,
  invalid_output: false,
  low_mixin: false,
  not_rct: false,
  not_relayed: false,
  overspend: false,
  reason: '',
  status: 'Failed',
  too_big: false }

This leads to the following type pattern:

double_spend: boolean;
fee_too_low: boolean;
invalid_input: boolean;
invalid_output: boolean;
low_mixin: boolean;
not_rct: boolean;
not_relayed: boolean;
overspend: boolean;
reason: string;
status: string;
too_big: boolean;