Update release notes for PR #2621

Author: andrew-platt

docs/changelogs/v4.0.1.md

@@ -60,7 +60,7 @@ This release includes multiple small bug-fixes including compilation issues with
 
 #2619 ROCM Flang doesn't compile NWTC_IO.f90 (andrew-platt)
 
-#2621 Bugfix: missing include path in `create_FAST_SFunc.m` (andrew-platt)
+#2621 Bugfix: Update `create_FAST_SFunc.m` for Windows, update docs on Simulink MEX building (andrew-platt)
 
 
 ## Module changes