Add notes about GPU_COUNT and column alignment

Author: Andy-Jost

.github/workflows/test-wheel-linux.yml

@@ -67,7 +67,7 @@ jobs:
           echo "OLD_BRANCH=${OLD_BRANCH}" >> "$GITHUB_OUTPUT"
 
   test:
-    name: py${{ matrix.PY_VER }}, ${{ matrix.CUDA_VER }}, ${{ (matrix.LOCAL_CTK == '1' && 'local') || 'wheels' }}, ${{ matrix.GPU }}
+    name: py${{ matrix.PY_VER }}, ${{ matrix.CUDA_VER }}, ${{ (matrix.LOCAL_CTK == '1' && 'local') || 'wheels' }}, ${{ matrix.GPU }}${{ matrix.GPU_COUNT != '1' && format('(x{0})', matrix.GPU_COUNT) || '' }}
     needs: compute-matrix
     strategy:
       fail-fast: false