docs: topf secret

[sujiba]

hi,

thanks for developing topf.

In the docs at https://postfinance.github.io/topf/main/commands/secrets/, the example command topf secrets > secrets.yaml never finishes, because it's waiting for confirmation. Maybe change it to:

# Output secrets to stdout
topf secrets

# Generate secrets without confirmation (e.g. in CI)
topf secrets --confirm=false

# Save secrets to a file
topf secrets --confirm=false > secrets.yaml