Allow configure markdownlint rules dynamically

[pedrogude]

Motivation

markdownlint allows configure the rules it applies through a configuration file.
Currently that configuration file is set in the configmap.yaml

In order to modify the rules that are applied in the markdown linting dynamically, it will be necessary for DocumentationLinter to accept a new parameter to be able to define the configuration of the rules and pass it to markdownlint

Acceptance criteria

• The development has to be properly tested
• Provide in the same PR the details to update the documentation