Add PoolRejectedTransactionByMinFeeRate error doc to test_tx_pool_accept

Author: eval-exec

rpc/src/module/pool.rs

@@ -121,6 +121,7 @@ pub trait PoolRpc {
     /// ## Errors
     ///
     /// * [`PoolRejectedTransactionByOutputsValidator (-1102)`](../enum.RPCError.html#variant.PoolRejectedTransactionByOutputsValidator) - The transaction is rejected by the validator specified by `outputs_validator`. If you really want to send transactions with advanced scripts, please set `outputs_validator` to "passthrough".
+    /// * [`PoolRejectedTransactionByMinFeeRate (-1104)`](../enum.RPCError.html#variant.PoolRejectedTransactionByMinFeeRate) - The transaction fee rate must be greater than or equal to the config option `tx_pool.min_fee_rate`.
     /// * [`PoolRejectedTransactionByMaxAncestorsCountLimit (-1105)`](../enum.RPCError.html#variant.PoolRejectedTransactionByMaxAncestorsCountLimit) - The ancestors count must be greater than or equal to the config option `tx_pool.max_ancestors_count`.
     /// * [`PoolRejectedDuplicatedTransaction (-1107)`](../enum.RPCError.html#variant.PoolRejectedDuplicatedTransaction) - The transaction is already in the pool.
     /// * [`TransactionFailedToResolve (-301)`](../enum.RPCError.html#variant.TransactionFailedToResolve) - Failed to resolve the referenced cells and headers used in the transaction, as inputs or dependencies.