diff --git a/.github/workflows/post_commit.yml b/.github/workflows/post_commit.yml
index 43cea6d846c1..0622925650cb 100644
--- a/.github/workflows/post_commit.yml
+++ b/.github/workflows/post_commit.yml
@@ -10,7 +10,7 @@ jobs:
   # so that the user does not need to learn pre-commit and pre-commit can still
   # be auto-executed by the workflow
   pre-commit:
-    runs-on: ubuntu-latet
+    runs-on: ubuntu-latest
     if: github.event.pull_request.merged == true && github.repository == 'nijkah/ColossalAI'
     steps:
     - uses: actions/checkout@v2
@@ -95,5 +95,3 @@ jobs:
       with:
         pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}
         merge-method: squash
-
-
diff --git a/examples/images/diffusion/scripts/tests/test_checkpoint.py b/examples/images/diffusion/scripts/tests/test_checkpoint.py
index a32e66d44cf2..5ead934584bd 100644
--- a/examples/images/diffusion/scripts/tests/test_checkpoint.py
+++ b/examples/images/diffusion/scripts/tests/test_checkpoint.py
@@ -34,4 +34,6 @@
         out_1 = diffusion_model(random_input_, time_stamp, context_)
         out_2 = dif_model_2(random_input_2, time_stamp2, context_2)
         print(out_1.shape)
-        print(out_2['sample'].shape)
\ No newline at end of file
+        print(out_2['sample'].shape)
+
+