Add note in action explaining step necessity

Author: stefmolin

.github/workflows/static.yml

@@ -37,7 +37,7 @@ jobs:
         uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b  # v5.0.0
       - name: Setup Node
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4.4.0
-      - name: Disable AppArmor
+      - name: Disable AppArmor # this is necessary for puppeteer to work
         run: echo 0 | sudo tee /proc/sys/kernel/apparmor_restrict_unprivileged_userns
       - name: Generate PDF version
         run: |