Moved all the v2 candidate files missing a .md extension to the correct extension

[talesh]

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Proposed changes

Moved all the v2 candidate files missing a .md extension to the correct extension

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)

Checklist

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• [ ] I have x-referenced the appropriate issue this addresses within the projects board
• [x] I have applied the relevant labels this PR addresses

Further comments

n/a

[GangGreenTemperTatum]

Already have a branch to do this as part of v2