Update CHANGELOG

Author: pinin4fjords

CHANGELOG.md

@@ -15,6 +15,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [PR #1141](https://github.com/nf-core/rnaseq/pull/1141) - Important! Template update for nf-core/tools v2.11
 - [PR #1144](https://github.com/nf-core/rnaseq/pull/1144) - Interface to kmer size for pseudoaligners
 
+### Parameters
+
+| Old parameter | New parameter                |
+| ------------- | ---------------------------- |
+|               | `--pseudo_aligner_kmer_size` |
+
+> **NB:** Parameter has been **updated** if both old and new parameter information is present.
+> **NB:** Parameter has been **added** if just the new parameter information is present.
+> **NB:** Parameter has been **removed** if new parameter information isn't present.
+
 ### Software dependencies
 
 | Dependency | Old version | New version |