README says `--clear` defaults to `true`, but CLI source sets it to `false`

[NickitaChe]

Hi! While testing docs-drift on this repo, I noticed a small docs drift in the options section.

README currently documents:

• -c, --clear Clear the console Default: true

But the current CLI source defines the flag as:

• clear.default = false

So either the README default value is outdated, or the implementation changed and the docs were not updated.

If the current source is the intended behavior, this looks like a straightforward README fix.

Found during external rollout testing of docs-drift.