refs #22915 updated release notes

docs/source/release/v3.14.0/muon.rst

@@ -4,9 +4,27 @@ MuSR Changes
 
 .. contents:: Table of Contents
    :local:
+   
+Interface
+---------
 
-.. warning:: **Developers:** Sort changes under appropriate heading
-    putting new features at the top of the section, followed by
-    improvements, followed by bug fixes.
+Improvements
+############
+- Elemental Analysis added to Muon Interfaces: Includes a selectable Periodic Table.
+
+Bugfixes
+########
+
+Algorithms
+----------
+
+New
+###
+
+Improvements
+############
+
+Bugfixes
+########
 
 :ref:`Release 3.14.0 <v3.14.0>`