Fix build path

Fix build path.

Author: abuccts

.github/workflows/nccl-tests.yml

@@ -25,7 +25,7 @@ jobs:
         make src.build -j
     - name: Build nccl-tests
       run: |
-        make MPI=1 MPI_HOME=/usr/local/mpi NCCL_HOME=./build -j -C ./nccl-tests
+        make MPI=1 MPI_HOME=/usr/local/mpi NCCL_HOME=../../build -j -C ./nccl-tests
     - name: Test local all reduce
       run: |
         mpirun \