document how to rename an output file

[davidealbanese]

cwlVersion: v1.0 # or v1.1
class: CommandLineTool
requirements:
  InlineJavascriptRequirement: {}

baseCommand: []

inputs: []

outputs:
 otu_table:
    type: File
    outputBinding:
      glob: otu_table.txt
      outputEval: ${self[0].basename=inputs.otu_table_name; return self;}