Fixes two minor copy-paste artefacts in the v1.5.2 CHANGELOG block:
the duplicate trailing "EUPL-1.2." right after the Based-on footer,
and a stray German "Optik" tab name in the power-settings list
(the settings tab is "Appearance" in EN, the German label only
appears in the localised UI). Yaml / repo.json / ROADMAP / README
already used the right wording.