fix a code listing in 10

hjwp · hjwp · commit 3333a1c5a26a · 2024-05-14T11:22:39.000+01:00
diff --git a/chapter_10_production_readiness.asciidoc b/chapter_10_production_readiness.asciidoc
@@ -800,6 +800,7 @@ RUN addgroup --system nonroot && adduser --system --group nonroot
 
 USER nonroot
 ----
+====
 
 
 === Configuring logging
