chore(jsr): use readme

[AugustinMauroy]

In JSR you have ability to select if you want to display JSdoc or readme. You should select readme because there are more explaining that JSdoc @module

Here a screen of the dropdown to select (I'm sudo mode)

[AugustinMauroy]

cc @juliusmarminge

[juliusmarminge]

Done. Maybe should make use of the more elaborate @module definition at the top of the module? Is that how it's meant to work ?