fixing if syntax

Author: gnunicorn

.github/workflows/wasm.yml

@@ -156,14 +156,14 @@ jobs:
         emcc -v
 
     - name: Default wasm-pack tests
-      if: !matrix.cmd
+      if: ${{ !matrix.cmd }}
       run: |
         cd crates/${{matrix.base_dir}}
         wasm-pack test --node -- ${{ matrix.cargo_args }}
         wasm-pack test --firefox --headless -- ${{ matrix.cargo_args }}
 
     - name: Testing with custom command
-      if: matrix.cmd
+      if: ${{ matrix.cmd }}
       run: |
         cd crates/${{matrix.base_dir}}
         ${{matrix.cmd}}