test to include plot in comment

.github/workflows/benchmark.yml

@@ -58,8 +58,7 @@ jobs:
                 echo '' >> body.md
                 echo '' >> body.md
                 echo '### Benchmark Plots' >> body.md
-                echo 'A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.' >> body.md
-                echo 'Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).' >> body.md
+                echo '![Benchmark Plot](plots/plot_'"$steps.extract-package-name.outputs.package_name"'.png)' >> body.md
 
             - name: Find Comment
               uses: peter-evans/find-comment@v3