Is your feature request related to a problem? Please describe.
When I use admonitions in python docstring like this:

"""
Note:
    Details ...
"""

I noticed that an collapsed admonitions is rendered in the browser now.

I can use !!! note to make a uncollapsed admonition, but this will make the docstring strange for human reading.

Describe the solution you'd like
The information contained in 'Note' or 'Tips' or other admonitions are usually important information, and we don't want our users to miss them, so I think at least we have a choise to choose whether it should be collapsed.

Platform: Windows 10
mkdocstrings == 0.19.0
mkdocstrings-python == 0.7.0
griffe == 0.20.0

I don't know if I described the situation clearly 😂