multiqc: fix typo :7

src/nf_modules/multiqc/main.nf

@@ -4,7 +4,7 @@ container_url = "lbmc/multiqc:${version}"
 process multiqc {
   container = "${container_url}"
   label "big_mem_mono_cpus"
-  publishDir "results/QC/", mode: 'copy':
+  publishDir "results/QC/", mode: 'copy'
 
   input:
     path report