Fix unite urls #1471

Job	Run time
Choose nextflow versions to test against depending on target branch	1s
nf-test (latest-everything, test, docker)	29m 2s
nf-test (latest-everything, test_single, docker)	7m 39s
nf-test (latest-everything, test_fasta, docker)	5m 41s
nf-test (latest-everything, test_failed, docker)	19m 59s
nf-test (latest-everything, test_multi, docker)	13m 56s
nf-test (latest-everything, test_reftaxcustom, docker)	9m 26s
nf-test (latest-everything, test_qiimecustom, docker)	10m 34s
nf-test (latest-everything, test_doubleprimers, docker)	11m 53s
nf-test (latest-everything, test_iontorrent, docker)	6m 12s
nf-test (latest-everything, test_novaseq, docker)	7m 53s
nf-test (latest-everything, test_pacbio_its, docker)	9m 17s
nf-test (latest-everything, test_sintax, docker)	19m 33s
nf-test (latest-everything, test_pplace, docker)	14m 54s
nf-test (latest-everything, test_multiregion, docker)	21m 12s
	3h 7m 12s

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