(doc) Fix release notes headers
diff --git a/src/site/markdown/releasenotes.md b/src/site/markdown/releasenotes.md
index 84b6e71..286c450 100644
--- a/src/site/markdown/releasenotes.md
+++ b/src/site/markdown/releasenotes.md
@@ -29,17 +29,17 @@
**GitHub:** <https://github.com/apache/maven-pmd-plugin/releases>
-## 🐛 Bug Fixes
+### 🐛 Bug Fixes
* [MPMD-334](https://issues.apache.org/jira/browse/MPMD-334) - Source Encoding parameter is ignored
-## 🚀 New features and improvements
+### 🚀 New features and improvements
* [MPMD-309](https://issues.apache.org/jira/browse/MPMD-309) - Add configuration option to show suppressed violations
* [MPMD-332](https://issues.apache.org/jira/browse/MPMD-332) - Support Java 18
### 📝 Documentation updates
* [MPMD-333](https://issues.apache.org/jira/browse/MPMD-333) - Add release notes documentation
-## 📦 Dependency updates
+### 📦 Dependency updates
* [MPMD-329](https://issues.apache.org/jira/browse/MPMD-329) - Upgrade to PMD 6.45.0
* [MPMD-330](https://issues.apache.org/jira/browse/MPMD-330) - Upgrade Maven Parent to 35
* [MPMD-331](https://issues.apache.org/jira/browse/MPMD-331) - Require Maven 3.2.5+
@@ -52,18 +52,18 @@
**GitHub:** <https://github.com/apache/maven-pmd-plugin/releases/tag/maven-pmd-plugin-3.16.0>
-## 🐛 Bug Fixes
+### 🐛 Bug Fixes
* [MPMD-325](https://issues.apache.org/jira/browse/MPMD-325) - Could not find class due to IncompatibleClassChangeError warning
* [MPMD-324](https://issues.apache.org/jira/browse/MPMD-324) - Ruleset URLs have hyphen replaced with forwardslash
* [MPMD-323](https://issues.apache.org/jira/browse/MPMD-323) - ResourceManager should use project base dir instead of pom location
-## 🔧 Build
+### 🔧 Build
* [MPMD-328](https://issues.apache.org/jira/browse/MPMD-328) - Shared GitHub Actions
-## 🚀 New features and improvements
+### 🚀 New features and improvements
* [MPMD-327](https://issues.apache.org/jira/browse/MPMD-327) - Upgrade to PMD 6.42.0
-## 📦 Dependency updates
+### 📦 Dependency updates
* [MPMD-326](https://issues.apache.org/jira/browse/MPMD-326) - Set Maven 3.1.1 as minimum version
## Version 3.15.0
