fix dead smart-contract-account-factory link in README.md

[sky-coderay]

hey devs! Replace dead link to new worked

https://github.com/Abstract-Foundation/examples/tree/main/smart-contract-accounts-factory - dead link
https://github.com/Abstract-Foundation/examples/tree/main/smart-contract-account-factory - new link

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PR-Codex overview

This PR updates the link in the README.md for the Smart Contract Account Factory section to correct the URL path.

Detailed summary

• Updated the link for Smart Contract Account Factory from smart-contract-accounts-factory to smart-contract-account-factory to ensure accurate navigation.

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