Docs Updates

[Tortar]

this fixes the Flocking example and improves the changelog for v6

[codecov-commenter]

Codecov Report

Merging #886 (4eaf56e) into main (71fac47) will not change coverage.
The diff coverage is n/a.

❗ Current head 4eaf56e differs from pull request most recent head 9b09cdb. Consider uploading reports for the commit 9b09cdb to get more accurate results

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Files Changed	Coverage Δ
src/Agents.jl	100.00% <ø> (ø)

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[Tortar]

removed also the comparison table in the docs

[Datseris]

removed also the comparison table in the docs

Please keep PRs focused, so it is easier to backtrack. I see many changes here that are really totally unrelated to the title of the PR!

The whole comparison page needs to be overhauled to contain as little information as possible, and point to the comparison repo as much as possible. But this needs to be done in a different PR!

[Tortar]

ok, let's do it this way even if we weren't that formal always e.g. here https://github.com/JuliaDynamics/Agents.jl/pull/591/files, not to do too many PRs I will just create a different pr for the comparison page, since I think this is an important change so maybe being more focused on that can be useful, and for this one I will just enlarge the scope of the PR

[Datseris]

ok, address comment and merge!