German date Format collides with markdown

[ldericher]

Describe the bug
If .Site.Params.dateFormat is a "german" variant like 2. January 2006, the markdownify recognizes it as the start of a list, and it is rendered incorrectly

To Reproduce

1. Add dateFormat = "2. January 2006" to one of your languages.*.toml in the [params] section
2. Have some post to be rendered …

Expected behavior
It should render a date as e.g. "27. Dezember 2019"

Screenshots
The date is rendered as e.g. "Dezember 2019" (inside an <ol>).

Workaround
remove markdownify filter from layouts/partials/meta/date.html and layouts/partials/meta/date-updated.html