Update benchmarks.yml

Author: juliagmt-google

.github/workflows/benchmarks.yml

@@ -91,6 +91,7 @@ jobs:
       - name: Run an HLO file
         working-directory: xla
         run: |
+          cd ..
           ./bazel-bin/xla/tools/multihost_hlo_runner/hlo_runner_main --device_type=gpu --log_output=True --use_spmd_partitioning --xla_gpu_dump_xspace_to=xla/results/xspace.pbtxt xla/gpu_hlo_backend.hlo  &> xla/results/gpu_hlo_backend.log
     
       # - name: Wait For Connection