substudy: Improve docs for `export anki` (#57) #57

Job	Run time
Create release (if needed)	4s
Build (x86_64-unknown-linux-musl, x86_64-unknown-linux-musl, cross, ubuntu-latest)	10s
Build (x86_64-apple-darwin, x86_64-apple-darwin, cargo, macos-latest)	7s
Build (aarch64-apple-darwin, x86_64-apple-darwin, cargo, macos-latest)	7s
Build (x86_64-pc-windows-msvc, x86_64-pc-windows-msvc, cargo, windows-latest, .exe)	8s
	36s

Provide feedback