Fixed syntax error

Author: smistad

.github/workflows/build_runtime_images.yaml

@@ -77,7 +77,7 @@ jobs:
 
       - name: Test docker image
         # Intel OpenCL does not work in github action
-        if: ${{ matrix.opencl != "intel" }}
+        if: ${{ matrix.opencl != 'intel' }}
         run: |
           if [ "${{ matrix.opencl }}" = "intel" ]; then
             docker run --rm -v ~/FAST/data/:/root/FAST/data/ --device=/dev/dri $IMAGE_NAME