Revert 'printf' lint for the updpkgsums script

As reported in #118 (closed), the lint change made in commit 17f27b53 for the updpkgsums script regarding the printf statement broke the expected formatting.

Unfortunately, every of my attempts to make this line "shellcheck compliant" resulted in a broken formatting. I assume the way "$1" is expected to be interpreted here makes it fall to the exceptions of the related shellcheck rule. I suggest ignoring shellcheck's feedback for that specific line.

changed the description

mentioned in issue #118 (closed)

mentioned in commit aed33d5b

merged

Danke

mentioned in merge request !49 (merged)

mentioned in commit 5dc11d0a