Amend change log for 21.1.2.
Amend change log for 21.1.2.

hoanganhx86/SeriesGuide,0359xiaodong/SeriesGuide,UweTrottmann/SeriesGuide,r00t-user/SeriesGuide,UweTrottmann/SeriesGuide,epiphany27/SeriesGuide,artemnikitin/SeriesGuide