diff --git a/docs/book/application-integration/usage-in-a-laminas-mvc-application.md b/docs/book/application-integration/usage-in-a-laminas-mvc-application.md
index 674dc1ee..b4e2532b 100644
--- a/docs/book/application-integration/usage-in-a-laminas-mvc-application.md
+++ b/docs/book/application-integration/usage-in-a-laminas-mvc-application.md
@@ -128,6 +128,7 @@ controller in the application.
 Add the following lines to the module configuration file, e.g.
 `module/Album/config/module.config.php`:
 
+<!-- markdownlint-disable MD033 -->
 <pre class="language-php" data-line="8-9,12-17"><code>
 namespace Album;
 
@@ -149,3 +150,4 @@ return [
     // …
 ];
 </code></pre>
+<!-- markdownlint-enable MD033 -->
diff --git a/docs/book/installation.md b/docs/book/installation.md
index 4de160ed..be1198c9 100644
--- a/docs/book/installation.md
+++ b/docs/book/installation.md
@@ -1,4 +1,4 @@
-**This is only a placeholder.**
+# This Is Only a Placeholder
 
 The content of this page can be found under: