Fix coveralls sources

Author: ZzEeKkAa

.github/workflows/coverage.yml

@@ -54,7 +54,7 @@ jobs:
       # Ignoring test due to opencl driver optimization bug
       - name: Run tests with coverage
         run: |
-          pytest  -q --cov --cov-report xml --pyargs numba_dpex \
+          pytest  -q --cov=./ --cov-report xml --pyargs numba_dpex \
             -k 'not test_1d_strided_dpnp_array_in_kernel[2]'
 
       - name: Coveralls