use parameter-supplied fastqscreen reference instead of hardcoded example

Author: kedhammar

workflows/seqinspector.nf

@@ -82,7 +82,7 @@ workflow SEQINSPECTOR {
 
     ch_fastqscreen_refs = Channel
         .fromList(samplesheetToList(
-            "${projectDir}/assets/example_fastq_screen_references.csv",
+            params.fastq_screen_references,
             "${projectDir}/assets/schema_fastq_screen_references.json"
         ))
         .toList()