windows support-info update is missing on homepage of pyserial-asyncio

[dreamflow]

in commit 13694c5 only the documentation-page
https://pyserial-asyncio.readthedocs.io was updated
with the windows support-info , but not the homepage .

could please the homepage
https://github.com/pyserial/pyserial-asyncio
also be updated with the windows support-info ,
so that windows based programmers ,
who find pyserial-asyncio via its homepage ,
can get interested too .