Update unittest.yml

Author: Juntongkuki

.github/workflows/unittest.yml

@@ -18,7 +18,7 @@ jobs:
       - name: test_base
         run: |
           git clone https://github.com/Juntongkuki/tnlearn_actions
-          cd tnlearn_actions
+          cd tests
 
       - name: test_base.py
         run: |