chore: customize announcement

Makefile

+export PACK_TITLE := Sinologie Anki Pack, Teil 1
 export RELEASE_DIR_STEM := sinology-1
 export VERSION := $(file < version.txt)
 export CONTENT_DIR := $(PWD)/content
+export DOWNLOAD_PREFIX := build/
+export GITLAB_REPO := kartenaale/sinology-1
 
 .PHONY: all
 all: build

build.sha

-af48aa155e789bece5c5d87cbf269fc9233f09dc
+7d3d4e6e1ba6b8c3b8bc7e4e34d3c838d3153e37