Docs and help output regarding colocation are wrong

[Vampire]

The docs and help output regarding colocation are wrong.

For example jj help git clone as well as https://jj-vcs.github.io/jj/latest/cli-reference/#jj-git-clone state, that the Git repo will be inside .jj, but that is only the case if you use --no-colocate, the colocation seems to be the default (at least now).

Same for git init to create a new repository or jj-ify an existing repository, it also by default creates colocated repos but the docs say otherwise.

[ilyagr]

The docs should mention the https://jj-vcs.github.io/jj/prerelease/config/#default-colocation option probably. Its default value changed recently.