Documentation for #329 (listing user's pending and approved reviews)

[jesshan700]

Added documentation for listing user pending and approved reviews.

• implemented documentation regarding for apartment cards

Test Plan

Notes

Breaking Changes

• Database schema change (anything that changes Firestore collection structure)
• Other change that could cause problems (Detailed in notes)

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ ggsawatyanon
❌ jesshan70
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[diff-counting] Significant lines: 4.

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[ggsawatyanon]

This is clear documentation for PR #329