Update debugging TF integration tests instructions. (#8657)

The python command can only be run under `integrations/tensorflow/test/python` directory.
diff --git a/docs/developers/debugging/tf_integrations_test_repro.md b/docs/developers/debugging/tf_integrations_test_repro.md
index e431f04..7c882fc 100644
--- a/docs/developers/debugging/tf_integrations_test_repro.md
+++ b/docs/developers/debugging/tf_integrations_test_repro.md
@@ -31,9 +31,12 @@
 # REQUIRES: llvmaot
 # RUN: %PYTHON -m iree_tfl_tests.posenet_i8_test --target_backend=llvmaot -artifacts_dir=%t
 
+cd python/
 python -m iree_tfl_tests.posenet_i8_test -- target_backend=llvmaot -artifacts_dir=/tmp/posenet_i8_failure
 ```
 
+Note that the command can only be run under `integrations/tensorflow/test/python` directory.
+
 5. This will create an `iree_input.mlir` in the temp directory specified. Those can then be fed into `iree-compile` (built locally to reproduce the error)
 
 ```