remove Todo from docs

[FloLey]

Description

remove a Todo from the docs

follow up issue: https://app.zenhub.com/workspaces/core-5a7c152b04a1652024289b7b/issues/gh/inmanta/apt/281
part of inmanta/inmanta-core#7134

note: to add a changelog entry and bump the version number:
inmanta module release --dev [--major|--minor|--patch] [--changelog-message "<your_changelog_message>"]

Merge procedure

1. merge using the merge button
2. tag and bump

git checkout master
git pull
inmanta module release
git push
git push {tag} # push the tag as well

3. Remove the branch

Self Check:

Strike through any lines that are not applicable (~~line~~) then check the box

• Attached issue to pull request
• Changelog entry
• Version number is bumped to dev version
• Code is clear and sufficiently documented
• Sufficient test cases (reproduces the bug/tests the requested feature)
• Correct, in line with design
• End user documentation is included or an issue is created for end-user documentation (add ref to issue here: )