Fix linter warnings

3 jobs for tn/docstring-linter in 1 minute and 28 seconds
Status Job ID Name Coverage
  Test
failed #2066
allowed to fail
lint_docs

00:00:30

passed #2067
lint_style

00:00:19

passed #2068
lint_syntax

00:00:38

 
Name Stage Failure
failed
lint_docs Test There is an unknown failure, please try again
        D401: First line should be in imperative mood; try rephrasing (found 'Convenience')
datamodelvalidator/validator.py:23 in public method `validate_datamodel`:
D401: First line should be in imperative mood ('Validate', not 'Validates')
datamodelvalidator/validator.py:36 in public method `validate`:
D401: First line should be in imperative mood ('Validate', not 'Validates')
ERROR: InvocationError: '/builds/euclid/datamodelvalidator/.tox/lint_docs/bin/pydocstyle datamodelvalidator --convention=numpy --add-ignore=D1'
___________________________________ summary ____________________________________
ERROR: lint_docs: commands failed
ERROR: Job failed: exit code 1