Update marketplace-fees-and-commissions.md

[sammygrey]

Changes

Small PR to add shoes to the publishing advance list for paid and limited shoes. Prices are referenced from here: https://devforum.roblox.com/t/introducing-avatar-shoes/3591562

Credit to @raskolibov for bringing this documentation issue up in this devforum post.

Checks

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[haan-roblox]

Thanks for catching this Sammy! I'll get this updated asap.