fix: 🐛 add link for the bootcamp

[paulstey]

This PR adds a link to for the GitBook that describes the bootcamp.

PR Summary

Briefly describe the changes.

Check the types of changes present in this PR:

• [ ] :bug: Bug
• [ ] :dragon: Feature
• [ ] :frog: Data (data folder - people/opportunities)
• [x] :dog: Content (content folder)
• [ ] :blowfish: Other. Specify:

Checklist:

• [x] Commitizen was used for all commits.
• [ ] Local site looks as expected after changes.
• [x] Contributing guidelines were followed.
• [x] If changes affect development, was the README updated?

If PR to production

• [ ] Development site (https://datasci.brown.edu) was checked and looks as expected.

[github-actions[bot]]

Technical Reviewer Checklist

Make sure the updates follow the contribution guidelines and the code is clear. Some of the things you should check:

• [ ] All commits use conventional style
• [ ] Website builds
• [ ] Code is readable and easily understandable, with comments, but not commented out code
• [ ] Spacing and indentation is constistent
• [ ] README was updated (if needed) and update is comprehensive and useful
• [ ] No extraneous files added, especially a .env or similar

[github-actions[bot]]

Content Reviewer Checklist

The content reviewer should have the experience/background to vet the content changes to this Pull Request.

Make sure the updates are consistent with the CCV website as a whole, the content is in the right place, and is easily understandable/accessible. Some of the things you should check:

• [ ] Check spelling
• [ ] Will this make sense to an outsider?
• [ ] Is this information redundant with other places in the website?
• [ ] Do links work and go to the expected place?
• [ ] Do the changes look how you would expect?

[paulstey]

Thank you, @mcmcgrath13 and @singhsaluja!!!