Docs: Sync changelog

For 196cdb2 changes

OcBootManagementLib: Fix default boot option selection regression

Docs: Move last changelog entry to where it belongs

Docs: Fix typos and TOC formatting

OcSerializeLib: Added debugging of missing fields in the configuration

Update Changelog.md

Build: Fix binary publishing

OcAppleImageConversion: Fix scale argument handling

OpenCanopy: Global variables are initialised with zeroes

closes acidanthera/bugtracker#805

OcBootManagementLib: Skip CurrentPolicy for cleaner log