Fix typo in config file

[mpospese]

Introduction

We advertise our open source repo's on the Swift Package Index. You can see YCoreUI's entry here. Using config files we can have this webpage show a "Documentation" link that connects to our documentation.

This config file was added in a previous commit, but it has a typo that prevents it from working. Therefore there is no "Documentation" button on the SPI website.

Purpose

Fix the typo in the SPI config file so that Swift Package Index can direct readers to Y—CoreUI's documentation. It should look like this:

(from the SPI entry for Y-Network, which is correctly configured)

Scope

Fix SPI config file .spi.yml

Discussion

Resolves #28

📈 Coverage

Coverage should be unchanged