test command wrong in usage.md

[fbnrst]

I noticed that the test command in usage.md is wrong.
There is a --input samplesheet.csv that should not be there:

methylseq/docs/usage.md

Lines 178 to 182 in 4415e90

	nextflow run nf-core/methylseq \
	--input samplesheet.csv \
	--outdir <OUTDIR> \
	--genome GRCh38 \
	-profile test,<docker/singularity/podman/shifter/charliecloud/conda/institute>

I believe the correct command is:

nextflow run nf-core/methylseq \
  --outdir <OUTDIR> \
  --genome GRCh38 \
  -profile test,<docker/singularity/podman/shifter/charliecloud/conda/institute>

[sateeshperi]

yup good catch......plz open a PR to dev with the change. Thank you