docs(scoring.md): Updates links to use new spreadsheet

[mattjared]

Changes links to correct v5 destinations.

Summary
Typos in docs. The previous links went to a spreadsheet that was only a link to this new version. This updates the url and skips a step.

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[mattjared]

@googlebot I signed it!

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[patrickhulce]

thanks very much @mattjared! LGTM