Update CHANGELOG.md

Co-authored-by: Kim, Sungchul <sungchul.kim@intel.com>

Author: kprokofi

CHANGELOG.md

@@ -47,7 +47,7 @@ All notable changes to this project will be documented in this file.
   (<https://github.com/openvinotoolkit/training_extensions/pull/3783>, <https://github.com/openvinotoolkit/training_extensions/pull/3816>, <https://github.com/openvinotoolkit/training_extensions/pull/3809>)
 - Support ImageFromBytes
   (<https://github.com/openvinotoolkit/training_extensions/pull/3948>)
-- enable model export
+- Enable model export
   (<https://github.com/openvinotoolkit/training_extensions/pull/3952>)
 - Move templates from OTX1.X to OTX2.X
   (<https://github.com/openvinotoolkit/training_extensions/pull/3951>)