fix regression for sha1sum

This script was not using the same k-mer value.

[boisvert@bigmem biosal]$ time ./scripts/development/run-argonnite-1-28.sh | tee log
real    19m15.438s
user    537m2.255s
sys     1m28.958s
[boisvert@bigmem biosal]$ sha1sum output/coverage_distribution.txt-canonical
71deaa88265222cd8c27c88980eb5c4f29c966af  output/coverage_distribution.txt-canonical

Link: https://github.com/GeneAssembly/biosal/issues/477
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>