Update README.md

Author: EfficientIP-Labs

README.md

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+# ⚠️ Repository Archived - Project Refused ⚠️
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+This repository is **no longer actively maintained** and has been **archived**.
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+The primary purpose of this project was to propose an integration/feature for the **mainstream project**, but the related **Pull Request (PR) was ultimately refused** by the upstream maintainers.
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+### Recommendation for Users
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+If you are looking for an **active** and **official** solution related to external DNS integration with EfficientIP, please refer to the currently supported repository:
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+➡️ **[EfficientIP-Labs/external-dns-efficientip-webhook](https://github.com/EfficientIP-Labs/external-dns-efficientip-webhook)**
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+It is highly recommended that you use the above-linked project instead of this archived repository.
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 <p align="center">
 	<img src="docs/img/external-dns.png" width="40%" align="center" alt="ExternalDNS">
 </p>