Small fixes in docs and error messages (#7826)

* Small fixes in docs and error messages

* Add chain id

Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>

docs/run-node/interact-node.md

@@ -19,10 +19,10 @@ simd query account $MY_VALIDATOR_ADDRESS --chain-id my-test-chain
 You should see the current balance of the account you created, equal to the original balance of `stake` you granted it minus the amount you delegated via the `gentx`. Now, create a second account:
 
 ```bash
-simd keys add recipient
+simd keys add recipient --keyring-backend test
 
 # Put the generated address in a variable for later use.
-RECIPIENT=$(simd keys show recipient -a)
+RECIPIENT=$(simd keys show recipient -a --keyring-backend test)
 ```
 
 The command above creates a local key-pair that is not yet registered on the chain. An account is created the first time it receives tokens from another account. Now, run the following command to send tokens to the `recipient` account:
@@ -37,10 +37,10 @@ simd query account $RECIPIENT --chain-id my-test-chain
 Finally, delegate some of the stake tokens sent to the `recipient` account to the validator:
 
 ```bash
-simd tx staking delegate $(simd keys show my_validator --bech val -a) 500stake --from recipient --chain-id my-test-chain
+simd tx staking delegate $(simd keys show my_validator --bech val -a --keyring-backend test) 500stake --from recipient --chain-id my-test-chain
 
 # Query the total delegations to `validator`.
-simd query staking delegations-to $(simd keys show my_validator --bech val -a) --chain-id my-test-chain
+simd query staking delegations-to $(simd keys show my_validator --bech val -a --keyring-backend test) --chain-id my-test-chain
 ```
 
 You should see two delegations, the first one made from the `gentx`, and the second one you just performed from the `recipient` account.

docs/run-node/keyring.md

@@ -115,7 +115,7 @@ To create a new key in the keyring, run the `add` subcommand with a `<key_name>`
 $ simd keys add my_validator --keyring-backend test
 
 # Put the generated address in a variable for later use.
-MY_VALIDATOR_ADDRESS=$(simd keys show my_validator -a)
+MY_VALIDATOR_ADDRESS=$(simd keys show my_validator -a --keyring-backend test)
 ```
 
 This command generates a new 24-word mnemonic phrase, persists it to the relevant backend, and outputs information about the keypair. If this keypair will be used to hold value-bearing tokens, be sure to write down the mnemonic phrase somewhere safe!

docs/run-node/run-node.md

@@ -39,12 +39,12 @@ The `~/.simapp` folder has the following structure:
       |- priv_validator_key.json    # Private key to use as a validator in the consensus protocol.
 ```
 
-Before starting the chain, you need to populate the state with at least one account. To do so, first [create a new account in the keyring](./keyring.md#adding-keys-to-the-keyring) named `my_validator` (feel free to choose another name).
+Before starting the chain, you need to populate the state with at least one account. To do so, first [create a new account in the keyring](./keyring.md#adding-keys-to-the-keyring) named `my_validator` under the `test` keyring backend (feel free to choose another name and another backend).
 
 Now that you have created a local account, go ahead and grant it some `stake` tokens in your chain's genesis file. Doing so will also make sure your chain is aware of this account's existence:
 
 ```bash
-simd add-genesis-account $(simd keys show my_validator -a) 100000000stake --chain-id my-test-chain
+simd add-genesis-account $MY_VALIDATOR_ADDRESS 100000000stake
 ```
 
 Recall that `$MY_VALIDATOR_ADDRESS` is a variable that holds the address of the `my_validator` key in the [keyring](./keyring.md#adding-keys-to-the-keyring). Also note that the tokens in the SDK have the `{amount}{denom}` format: `amount` is is a 18-digit-precision decimal number, and `denom` is the unique token identifier with its denomination key (e.g. `atom` or `uatom`). Here, we are granting `stake` tokens, as `stake` is the token identifier used for staking in [`simapp`](https://github.com/cosmos/cosmos-sdk/tree/v0.40.0-rc2/simapp). For your own chain with its own staking denom, that token identifier should be used instead.
@@ -53,10 +53,10 @@ Now that your account has some tokens, you need to add a validator to your chain
 
 ```bash
 # Create a gentx.
-simd gentx --name my_validator --amount 100000stake --chain-id my-test-chain
+simd gentx my_validator --amount 100000stake --chain-id my-test-chain --keyring-backend test
 
 # Add the gentx to the genesis file.
-simd collect-gentxs --chain-id my-test-chain
+simd collect-gentxs
 ```
 
 A `gentx` does three things:

types/tx/types.go

@@ -92,7 +92,7 @@ func (t *Tx) ValidateBasic() error {
 	if len(sigs) != len(t.GetSigners()) {
 		return sdkerrors.Wrapf(
 			sdkerrors.ErrUnauthorized,
-			"wrong number of signers; expected %d, got %d", t.GetSigners(), len(sigs),
+			"wrong number of signers; expected %d, got %d", len(t.GetSigners()), len(sigs),
 		)
 	}