feat(prefix-contest-slug): rename org contests when the org's slug ch…

[ZephyrNova47]

…anges

Description

rename org contests when an organization's slug changes.

Type of change: new feature,

What

What does the PR do?

Why

Create a function to rename org contests when an organization's slug changes.

Fixes # (486)

How Has This Been Tested?

Manually testing

Checklist

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Before changed

Changed

After