Update OtherAPIs.md to fix links

[koh1project]

Updated broken links

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Summary

Fixed internal links in OtherAPIs.md. 2 internal links were broken due to minor issues.

Motivation

To help future readers because I needed to spend some time figuring specific files out.

Test plan

N/A

Closing issues

N/A

Types of changes

• [ x ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [ x ] I have read the CONTRIBUTING document.
• [ x ] My code follows the code style of this project.
• [ x ] My change requires a change to the documentation.
• [ x ] I have updated the documentation accordingly.
• [ x ] I have added tests to cover my changes.
• [ x ] All new and existing tests passed.