Minor comment update

[bitwombat]

The statement in injectEventManager's comments that a shared event manager is injected into an existing event manager is incorrect - the code replaces the existing event manager with a new one. That's what I updated.

I may have added too much 'how it works' detail, but I puzzled over this a bit so I thought the explanation might help future readers.

[bitwombat]

Also, I wonder about the pre-existing comment that "the conditional will always pass". I think that's true. Then does it need to be a conditional?

[weierophinney]

This repository has been closed and moved to laminas/laminas-mvc; a new issue has been opened at laminas/laminas-mvc#12.

[weierophinney]

This repository has been moved to laminas/laminas-mvc. If you feel that this patch is still relevant, please re-open against that repository, and reference this issue. To re-open, we suggest the following workflow:

• Squash all commits in your branch (git rebase -i origin/{branch})
• Make a note of all changed files (`git diff --name-only origin/{branch}...HEAD
• Run the laminas/laminas-migration tool on the code.
• Clone laminas/laminas-mvc to another directory.
• Copy the files from the second bullet point to the clone of laminas/laminas-mvc.
• In your clone of laminas/laminas-mvc, commit the files, push to your fork, and open the new PR.
  We will be providing tooling via laminas/laminas-migration soon to help automate the process.