Update README.md

Author: jakozaur

README.md

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 # GPT-OSS-20B Red Team Security Testing Toolkit
 
-[![CI](https://github.com/QuesmaOrg/red-team-testbed-for-gpt-oss/actions/workflows/ci.yml/badge.svg)](https://github.com/QuesmaOrg/red-team-testbed-for-gpt-oss/actions/workflows/ci.yml)
+[![Unit tests](https://github.com/QuesmaOrg/red-team-testbed-for-gpt-oss/actions/workflows/unit-tests.yml/badge.svg)](https://github.com/QuesmaOrg/red-team-testbed-for-gpt-oss/actions/workflows/unit-tests.yml)
 
 A comprehensive security testing framework for the OpenAI GPT-OSS-20B Red Teaming Competition.