Update user_guide_src/source/changelogs/v4.6.1.rst

Co-authored-by: Michal Sniatala <michal@sniatala.pl>

Author: FrancescoCiannavei

user_guide_src/source/changelogs/v4.6.1.rst

@@ -21,7 +21,7 @@ Message Changes
 *******
 Changes
 *******
-- **Mimes**: Added the ``application/octet-stream`` mime type for the ``stl`` extension inside the ``Config\Mimes`` class.
+- **Mimes**: Added the ``model/stl`` and ``application/octet-stream`` mime types for the ``stl`` extension inside the ``Config\Mimes`` class.
 
 ************
 Deprecations