Update changelog for moving media button initialization to avoid crash

Author: theck13

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [1.3.39](https://github.com/wordpress-mobile/AztecEditor-Android/releases/tag/v1.3.39)
+### Fixed
+- Move media button initialization to avoid crash when advanced toolbar is enabled and media button is disabled
+
 ## [1.3.38](https://github.com/wordpress-mobile/AztecEditor-Android/releases/tag/v1.3.38)
 ### Fixed
 - When text changes, only disable selection listener if text is empty