Fix unite urls #1477

Job	Run time
Choose nextflow versions to test against depending on target branch	1s
nf-test (latest-everything, test, docker)	28m 49s
nf-test (latest-everything, test_single, docker)	7m 45s
nf-test (latest-everything, test_fasta, docker)	5m 45s
nf-test (latest-everything, test_failed, docker)	20m 58s
nf-test (latest-everything, test_multi, docker)	12m 58s
nf-test (latest-everything, test_reftaxcustom, docker)	14m 29s
nf-test (latest-everything, test_qiimecustom, docker)	11m 1s
nf-test (latest-everything, test_doubleprimers, docker)	12m 51s
nf-test (latest-everything, test_iontorrent, docker)	6m 40s
nf-test (latest-everything, test_novaseq, docker)	7m 53s
nf-test (latest-everything, test_pacbio_its, docker)	11m 18s
nf-test (latest-everything, test_sintax, docker)	20m 49s
nf-test (latest-everything, test_pplace, docker)	15m 32s
nf-test (latest-everything, test_multiregion, docker)	20m 23s
	3h 17m 12s

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