DuckDns: fix typo in duckdns-install-package

[leschekfm]

Description:

Small fix in the console output while installing duckdns

Checklist (Required):

• The code change is tested and works locally.
• The code is compliant with Contributing guidelines

If pertinent:

• Script has validation check of the job.
• Created/Updated documentation at /docs

[homeassistant]

Hi @leschekfm,

It seems you haven't yet signed a CLA. Please do so here.

Once you do that we will be able to review and accept this pull request.

Thanks!

[ludeeus]

@leschekfm Looks good :)
Can you look at the message by @homeassistant, we can not accept this before you sign the CLA.