docs: fix issues in jq filter examples and broken links

[cmppoon]

I made some improvements in the docs. Please let me know if any changes are required. I hope it helps, thanks!

1. Added missing closing quotes in some jq filter examples to correct syntax highlighting issues.

2. Fixed markdown syntax to eliminate warnings.

3. Fixed broken links for TrackSock and UntrackSock in hooks.md.

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Fixes: #issue-number

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[mtardy]

Thanks for the fixes!