Description of genome_statistics subworkflow

docs/output.md

@@ -129,7 +129,21 @@ The subworkflow performs scaffolding of the primary contigs using HiC mapping ge
 
 ### GENOME_STATISTICS
 
-Is used at various stages of the main workflow to evaluate the quality of contigs at the intermidate steps</p> 
+<details markdown="1">
+  <summary>Output files</summary>
+
+  - <code>*.assembly_summary</code>
+    - numeric statistics for pri and alt sequences
+  - <code>*ccs.merquryk</code>
+    - folder with merqury plots and kmer statistics
+  - <code>*busco</code>
+    - folder with BUSCO results
+
+</details>
+
+This subworkflow is used to evaluate the quality of sequences. It is performed after the intermidate steps, such as raw assembly generation, purging and polishing, and also at the end of the pipeline when scaffolds are produced.</p> 
+
+![Genome statistics subworkflow](https://raw.githubusercontent.com/sanger-tol/genomeassembly/documentation/docs/images/v1/genome_statistics.png)
 
 ### ORGANELLES
 Implements steps to assemble the mitogenome</p>