Fix error in references

Author: chrisreddington

content/full-day/2-issues.md

@@ -57,5 +57,7 @@ GitHub Issues are the core to project management on GitHub. Their flexibility al
 [about-prs]: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-pull-requests
 [issues]: https://github.com/features/issues
 [issues-docs]: https://docs.github.com/en/issues/tracking-your-work-with-issues/about-issues
+[projects-docs]: https://docs.github.com/en/issues/planning-and-tracking-with-projects/learning-about-projects/quickstart-for-projects
 [skills-markdown]: https://github.com/skills/communicate-using-markdown
-[walkthrough-next]: 3-codespaces.md[walkthrough-previous]: 1-code-scanning.md[projects-docs]: https://docs.github.com/en/issues/planning-and-tracking-with-projects/learning-about-projects/quickstart-for-projects
+[walkthrough-next]: 3-codespaces.md
+[walkthrough-previous]: 1-code-scanning.md