[ci-skip] Improve error-reporting guide

[shalvah]

Motivation / Background

This PR makes some improvements to the error-reporting guide introduced in https://github.com/rails/rails/pull/45946 :

• Reworks the docs for clarity
• Removes some unnecessary content
• Adds some missing details

I work with Honeybadger, and we recently added support for the error reporter, so I also went ahead to mention us as an example of tools which support it.

Checklist

Before submitting the PR make sure the following are checked:

• [x] This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• [x] There are no typos in commit messages and comments.
• [x] Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• [x] Feature branch is up-to-date with main (if not - rebase it).
• [x] Pull request only contains one commit for bug fixes and small features. If it's a larger feature, multiple commits are permitted but must be descriptive.
• [x] Tests are added if you fix a bug or add a feature.
• [x] CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.
• [x] PR is not in a draft state.
• [x] CI is passing.