Docs: Sync changelog

closes acidanthera/bugtracker#1242

Changelog.md

@@ -22,6 +22,7 @@ OpenCore Changelog
 - Fixed plist-only kext injection in Big Sur
 - Add `ForceResolution` option for enabling non-default resolutions
 - Fixed Ps2MouseDxe not properly loading under OpenDuetPkg
+- Added workaround for read-only errors on some X299 boards
 
 #### v0.6.2
 - Updated builtin firmware versions for SMBIOS and the rest