Merge pull request #23868 codenarc off title

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### Contributor Checklist
- [ ] [Review Contribution Guidelines](https://github.com/gradle/gradle/blob/master/CONTRIBUTING.md)
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- [ ] Ensure that tests pass sanity check: `./gradlew sanityCheck`
- [ ] Ensure that tests pass locally: `./gradlew <changed-subproject>:quickTest`

### Gradle Core Team Checklist
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Co-authored-by: Amanda L Martin <hythloda@gmail.com>

subprojects/docs/src/docs/release/notes.md

@@ -295,7 +295,7 @@ To ensure future compatibility, the [CodeNarc Plugin](userguide/codenarc_plugin.
 
 You can still explicitly specify a CodeNarc version with the `toolVersion` property on the [CodeNarcExtension](dsl/org.gradle.api.plugins.quality.CodeNarcExtension.html#org.gradle.api.plugins.quality.CodeNarcExtension).
 
-#### PMD and CodeNarc tasks now execute in parallel by default
+#### Enhanced PMD tasks to execute in parallel by default
 
 The [PMD](userguide/pmd_plugin.html) plugin performs quality checks on your project’s Java source files using a static code analyzer. It now uses the Gradle [worker API](userguide/custom_tasks.html#worker_api) and [JVM toolchains](userguide/toolchains.html#header). This tool now performs analysis via an external worker process, and therefore its tasks may now run in parallel within one project.