Fix typos in chorda tendinea term (UBERON:0005994)

[dragon-ai-agent]

Summary

This PR fixes spelling typos in the chorda tendinea term (UBERON:0005994) as reported in issue #3441.

Changes Made

• Label correction: Changed chorda tendineae → chorda tendinea (singular form)
• Synonym correction: Changed chordae tendinea → chordae tendineae (plural form)

Rationale

The correct Latin terminology is:

• Singular: chorda tendinea
• Plural: chordae tendineae

The previous label incorrectly used the plural form "tendineae" with the singular "chorda", and one synonym incorrectly used the singular form "tendinea" with the plural "chordae".

These corrections align with standard medical references and the Wikipedia article on Chordae tendineae.

Fixes #3441

@dragon-ai-agent

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