Updated changelog

Author: S-Dafarra

doc/release/master.md

@@ -29,6 +29,7 @@ Fixes
 
 * Configuration files installed by the `yarp_configure_plugins_installation` CMake macro are now relocatable (https://github.com/robotology/yarp/issues/2445, ).
 * Improved `ffmpeg` port monitor to allow using different couples of coders/decodes
+* Improved `yarpdev` closing behavior for devices implementing the `iService` interface
 
 New Features
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