fixup! tools: add benchmark runner to test-shared

Author: aduh95

.github/workflows/test-shared.yml

@@ -216,11 +216,11 @@ jobs:
                   -- ${{ inputs.category }} \
                 | tee /dev/stderr \
                 > ${{ matrix.system }}.csv
-                echo 'Benchmark results:'
+                echo "Benchmark results:"
                 echo
-                echo '```'
+                echo '"'"'```'"'"'
                 Rscript benchmark/compare.R < ${{ matrix.system }}.csv
-                echo '```'
+                echo '"'"'```'"'"'
             ' | tee /dev/stderr >> "$GITHUB_STEP_SUMMARY"
         env:
           FILTER: ${{ inputs.filter }}