Add Search to documentation

[emmanuellar]

Problem Statement

There's no search button on the documentation page.

What happens if this is not addressed

This makes it harder for contributors to find specific items or keywords they're looking for in the docs.

Resources

• Contributing.md file for the website (Couldn't find a link to this)

Recommended Action Items

• Add a priority label to this issue (OTA team)
• Add a project label to this issue
• Discuss with a Community Manager at Open Terms Archive
• Discuss with the Open Terms Archive team
• Make a new issue in the project repository