fix: update default config values for init

[artemijspavlovs]

the generated config file:

❯ cat ~/.eibc-client/config.yaml
bots:
    keyring_backend: test
    keyring_dir: /Users/artemijspavlovs/.eibc-client
    max_orders_per_tx: 10
    number_of_bots: 30
    policy_address: <your-policy-address>
gas:
    fees: 3000000000000000adym
log_level: info
node_address: http://localhost:36657
operator:
    account_name: client
    group_id: 1
    keyring_backend: test
    keyring_dir: /Users/artemijspavlovs/.eibc-client
    min_fee_share: 0.1
order_polling:
    enabled: false
    interval: 30s
rollapps:
    example_1234-1:
        full_nodes:
            - http://localhost:26657
        min_confirmations: "1"
slack:
    app_token: <your-slack-app-token>
    channel_id: <your-slack-channel-id>
    enabled: false
validation:
    fallback_level: p2p
    validation_wait_time: 60m