Fix typo

Signed-off-by: ZePan110 <ze.pan@intel.com>

Author: ZePan110

.github/workflows/push-image-build.yml

@@ -27,7 +27,7 @@ jobs:
 
   image-build:
     needs: job1
-    if: ${{ needs.job1.outputs.run_matrix != "" }}
+    if: ${{ needs.job1.outputs.run_matrix != '' }}
     strategy:
       matrix: ${{ fromJSON(needs.job1.outputs.run_matrix) }}
       fail-fast: false