[doc] Update release notes, fixes #1078, refs #2279

docs/pages/release_notes.md

@@ -19,8 +19,15 @@ This is a {{ site.pmd.release_type }} release.
 This PMD release ships a new version of the pmd-designer.
 For the changes, see [PMD Designer Changelog](https://github.com/pmd/pmd-designer/releases/tag/6.21.0).
 
+### Apex Suppressions
+
+In addition to suppressing violation with the `@SuppressWarnings` annotation, Apex now also supports
+the suppressions with a `NOPMD` comment. See [Suppressing warnings](pmd_userdocs_suppressing_warnings.html).
+
 ### Fixed Issues
 
+*   apex
+    *   [#1087](https://github.com/pmd/pmd/issues/1087): \[apex] Support suppression via //NOPMD
 *   java
     *   [#2268](https://github.com/pmd/pmd/issues/2268): \[java] Improve TypeHelper resilience
 *   java-errorprone
@@ -36,6 +43,7 @@ For the changes, see [PMD Designer Changelog](https://github.com/pmd/pmd-designe
 *   [#2253](https://github.com/pmd/pmd/pull/2253): \[modelica] Remove duplicated dependencies - [Piotrek Żygieło](https://github.com/pzygielo)
 *   [#2256](https://github.com/pmd/pmd/pull/2256): \[doc] Corrected XML attributes in release notes - [Maikel Steneker](https://github.com/maikelsteneker)
 *   [#2276](https://github.com/pmd/pmd/pull/2276): \[java] AppendCharacterWithCharRule ignore literals in expressions - [Kris Scheibe](https://github.com/kris-scheibe)
+*   [#2279](https://github.com/pmd/pmd/pull/2279): \[apex] Add support for suppressing violations using the // NOPMD comment - [Gwilym Kuiper](https://github.com/gwilymatgearset)
 
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