[Debug] add some file link format handling

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

you should not get the parameter here, but use a parameter reference instead: ``%templating.helper.code.file_link_format%``. This way, if the parameter gets overwritten, the final value will be used