fix lint

docs/usage.md

@@ -108,7 +108,7 @@ nf-core/raredisease will auto-detect whether a sample is single- or paired-end u
 | `lane`        | Used to generate separate channels during the alignment step. It is of string type, and we recommend using a combination of flowcell and lane to distinguish between different runs of the same sample. |
 | `fastq_1`     | Absolute path to FASTQ file for Illumina short reads 1. File has to be gzipped and have the extension ".fastq.gz" or ".fq.gz".                                                                          |
 | `fastq_2`     | Absolute path to FASTQ file for Illumina short reads 2. File has to be gzipped and have the extension ".fastq.gz" or ".fq.gz".                                                                          |
-| `sex`         | Sex (1=male; 2=female; for unknown sex use 0 or 'other').                                                                                                                                                 |
+| `sex`         | Sex (1=male; 2=female; for unknown sex use 0 or 'other').                                                                                                                                               |
 | `phenotype`   | Affected status of patient (0 = missing; 1=unaffected; 2=affected).                                                                                                                                     |
 | `paternal_id` | Sample ID of the father, can be blank if the father isn't part of the analysis or for samples other than the proband.                                                                                   |
 | `maternal_id` | Sample ID of the mother, can be blank if the mother isn't part of the analysis or for samples other than the proband.                                                                                   |