Add release note

Author: cbkerr

doc/src/release-notes.md

@@ -19,6 +19,7 @@
   properly escaped in the bash script output.
 * Typographical errors in the documentation.
 * The documentation now builds correctly with mdbook 0.4.43.
+* Example code converts environment variables to ints where needed.
 
 ## 0.3.1 (2024-10-04)