Restore Tutorial: Create a DSL2 Module

[camlloyd]

Describe the bug
Content under https://nf-co.re/docs/contributing/tutorials/dsl2_modules_tutorial#create-a-test-snapshot appears to be missing.
Introduced in commit 0d9e386

To Reproduce

1. Click the link above.
2. Navigate to Tutorial: Create a DSL2 Module > Create a test snapshot

Expected behavior
This section should not end so abruptly.

Screenshots
If applicable, add screenshots to help explain your problem.

Browser (please complete the following information):

• OS: [e.g. iOS] macOS Sonoma
• Browser [e.g. chrome, safari] Firefox
• Version [e.g. 22] 123.0.1

Additional context
Add any other context about the problem here.

[camlloyd]

duplicate of #2389