Fix missing PageNav in docs

[damithc]

Fixes a typo that caused the page navigation menu to not appear:

before:

after:

[github-actions[bot]]

The following links are for previewing this pull request:

• Dashboard Preview: https://dashboard-2219-pr-reposense-reposense.surge.sh
• Docs Preview: https://docs-2219-pr-reposense-reposense.surge.sh