show me how to get started adding DocC to my package.

To get started with adding DocC to your package, you can follow the steps outlined in the relevant WWDC session. Unfortunately, the provided context does not include specific details on adding DocC to your package. However, I can guide you on the general steps to get started:

1. Create a Documentation Catalog: In your Swift package, create a new directory named Documentation at the root level. Inside this directory, create a new file named MyPackage.docc (replace MyPackage with the name of your package).

2. Add a Documentation Bundle: Inside the .docc directory, create a Contents directory. This is where you will add your documentation files, such as .md files for your articles and tutorials.

3. Configure the Documentation: Create a Info.plist file inside the .docc directory to configure your documentation bundle. This file should include metadata about your documentation, such as the bundle identifier and the display name.

4. Write Documentation: Add markdown files to the Contents directory. These files will contain the documentation for your package, including articles, tutorials, and API references.

5. Build Documentation: Use Xcode or the Swift Package Manager to build your documentation. In Xcode, you can select Product > Build Documentation to generate the documentation. With Swift Package Manager, you can use the swift package generate-documentation command.

For more detailed instructions, you might want to refer to the official Apple documentation or watch the relevant WWDC sessions on documentation and DocC.

If you have any specific questions or need further assistance, feel free to ask!