Fix KeyError (refs) when `--disable_links` is set to True

[fatualux]

Proposal to fix this issue

No explaination needed.

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[SaiMadhusudan]

Are you sure about it ? if self.check_line_spans(lines): page_lines[page_id] = lines # Changes to the page object are not reflected in the dictionary output refs = page.get("refs") if refs is not None: self.page_refs[page_id] = page["refs"] this is what you are suggesting should it the refs = be outside the if statement instead of being inside the if self.check_line_spans

[tarun-menta]

This is fixed in the new release (https://github.com/VikParuchuri/marker/releases/tag/v1.6.2). Thanks for the PR!