[chore] Switch aspnetcore list to - rather than * to enable linting

[thompson-tomo]

Changes

This switches the list nested in an aspnetcore note to - so that the doc can be linted.

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[lmolkova]

See discussion in #189

[trask]

@thompson-tomo is this the only place * is used other than -? we don't really want to enforce at this time, and we also don't want a lot of PRs that only do these changes that don't have any clear benefit

[thompson-tomo]

@lmolkova i can see why you would draw a bow to prettier however that is not the correct bow to draw. This PR is part of getting linting running on all the generated content which is currently not the case and different to adding a formatter. That is why it is linked to #3074 and without this change the entire signal definition needs a manual suppression as seen in #3074

@trask this in the only case needed to eliminate linting suppression from general docs (manually created excluding resource docs). If you want to see the benefit of having linting run on the docs, just look at #3073 which would've been caught by linting.