added comment to diamond rule

workflow/rules/annotation.smk

@@ -23,6 +23,7 @@ rule annotation_prodigal:
 
 ##################################################
 # DIAMOND
+# Blog post: http://www.opiniomics.org/a-simple-test-for-uncorrected-insertions-and-deletions-indels-in-bacterial-genomes/
 
 # NOTE: currently NOT used
 # For info on "--longs-reads" option see https://github.com/bbuchfink/diamond/releases/tag/v0.9.23