Update changelog entry.

Author: Kami

CHANGELOG.md

@@ -7,9 +7,7 @@ For actual scalyr agent changelog, please see https://github.com/scalyr/scalyr-a
 - Fix a bug with ``volumesMount`` chart value not being used inside the DaemonSet and Deployment
   template.
 
-  Contributed by @xdvpser.
-
-  #25 #31
+  Contributed by @xdvpser. #25 #31
 
 ## 0.2.21
 
@@ -19,6 +17,8 @@ For actual scalyr agent changelog, please see https://github.com/scalyr/scalyr-a
 
   This allows users to re-use the existing Kubernetes secret where DataSet API key is stored.
 
+  Contributed by @yuri-1987. #26
+
 ## 0.2.20
 
 - Update agent to the latest stable version (v2.1.36).