Apply code-format changes

Author: flagtree-bot

python/triton/_filecheck.py

@@ -18,6 +18,7 @@
 # Stub target for testing the frontend.
 # flagtree backend path specialization
 from triton.flagtree_spec import spec
+
 stub_target = spec("spec_get_stub_target")
 if not stub_target:
     stub_target = GPUTarget("cuda", 100, 32)