Fix formatting

docs/usage.md

@@ -561,7 +561,6 @@ plugins {
 
 This should go in your Nextflow configuration file, specified with `-c <YOURCONFIG>` when running the pipeline.
 
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 ### Calling variants on the GPU with DeepVariant
 
 To use GPU for variant calling you have to override the container image. The GPU-enabled DeepVariant image is very large, so it's not used by default. You need to identify the DeepVariant version used by raredisease. Then replace the container image of the `DEEPVARIANT_CALLVARIANTS` process with one from Google's Docker Hub, `docker.io/google/deepvariant:X.Y.Z-gpu`, changing "X.Y.Z" to the version.
@@ -571,6 +570,7 @@ For singularity / apptainer you can use containerOptions = '--nv' to enable GPU
 If using a queue system like SLURM, or the Cloud, you usually have to enable certain options to get access to GPUs, e.g. the `queue` directive. If you run locally on a server with a single GPU, you can set `maxForks = 1` to prevent starting simultaneous GPU jobs for different samples.
 
 Configuration example:
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 ```
     withName:"DEEPVARIANT_CALLVARIANTS" {
         cpus = 6
@@ -579,4 +579,3 @@ Configuration example:
         maxForks = 1
     }
 ```
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