Best Practice Guidelines - Lint Whitespace

Lint white space acrodding to best practices here https://wiki.galaxyproject.org/Tools/BestPractices.

(4 lines per indent).

Start by reviewing the linked Galaxy Best Practices guidance and locating Planemo's existing whitespace or lint entry points. Apply the stated four-spaces-per-indent rule wherever the issue's lint scope covers it, then verify that the relevant lint checks pass.

Written by the indexing model from the issue text.