fix: update coverage path in test workflow to target the correct module

Author: whatevertogo

.github/workflows/coverage_test.yml

@@ -37,7 +37,7 @@ jobs:
           mkdir -p data/temp
           export TESTING=true
           export ZHIPU_API_KEY=${{ secrets.OPENAI_API_KEY }}
-          pytest --cov=. -v -o log_cli=true -o log_level=DEBUG
+          pytest --cov=astrbot -v -o log_cli=true -o log_level=DEBUG
 
       - name: Upload results to Codecov
         uses: codecov/codecov-action@v5