fix linting

Author: jenmuell

docs/usage.md

@@ -80,7 +80,7 @@ If you are using [GENCODE](https://www.gencodegenes.org/) reference genome files
 The default settings of the pipeline are mainly adapted for eukaryotes but have to be changed slightly for prokaryotes. The main reason for this is the different genetic architecure of prokaryotes. The below mentioned parameters work if a `gff` file is provided as reference.
 
 Changes and parameter specifications for prokaryotes:
-* `--featurecounts_feature_type transcript` since the default value `exon` does not contain the required `--featurecounts_group_type gene_biotype` specification
+* Use `--featurecounts_feature_type transcript` since the default value `exon` does not contain the required `--featurecounts_group_type gene_biotype` specification
 * You can use `--featurecounts_feature_type CDS` in combination with `--featurecoutns_group_type product` but than featureCounts will no longer reflect  the biotypes of your RNA. It could be helpful to identify the number of hypothetical proteins.
 * If your execution struggle with Salmon as aligner, change `--alginer` to hisat2.
 * You can skip RSeQC with `--skip_rseqc` since it mainly focus on eukaryotic features like splice junctions, transcription start (TSS) and ending sites (TES)