moved pdf to the correct filename

[rossja]

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Proposed changes

Corrected changelog but didn't change the pdf filename. fixed that.

Types of changes

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• [X] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Documentation Update (if none of the other choices apply)

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Further comments

na

[rossja]

just to clarify, this should be replacing the existing -v1.pdf with an updated version that has the correct date on the changelog table on page 2.