docs: add mock heroes to the code review tabs

[erikologic]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• angular.io application / infrastructure changes
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://cla.developers.google.com/ to sign.

Once you've signed (or fixed any issues), please reply here (e.g. I signed it!) and we'll verify it.

---

What to do if you already signed the CLA

Individual signers

• It's possible we don't have your GitHub username or you're using a different email address on your commit. Check your existing CLA data and verify that your email is set on your git commits.

Corporate signers

• Your company has a Point of Contact who decides which employees are authorized to participate. Ask your POC to be added to the group of authorized contributors. If you don't know who your Point of Contact is, direct the Google project maintainer to go/cla#troubleshoot (Public version).
• The email used to register you as an authorized contributor must be the email used for the Git commit. Check your existing CLA data and verify that your email is set on your git commits.
• The email used to register you as an authorized contributor must also be attached to your GitHub account.

ℹ️ Googlers: Go here for more info.

[erikologic]

I signed it!

[googlebot]

CLAs look good, thanks!

ℹ️ Googlers: Go here for more info.

[mary-poppins]

You can preview ad64bd8 at https://pr31080-ad64bd8.ngbuilds.io/.

[brandonroberts]

Remove the (docs-infra) scope from the git commit message

[mary-poppins]

You can preview c208391 at https://pr31080-c208391.ngbuilds.io/.

[mary-poppins]

You can preview 43564c3 at https://pr31080-43564c3.ngbuilds.io/.

[brandonroberts]

@mrenrich84 this git commit message should in present tense. Update to docs: add mock heroes to the code review tabs for TOH pt. 2

[mary-poppins]

You can preview d31fef4 at https://pr31080-d31fef4.ngbuilds.io/.

[ngbot]

I see that you just added the PR action: merge label, but the following checks are still failing:
     status "ci/circleci: integration_test" is failing
     status "ci-codefresh-bazel" is pending
     missing required status "ci/circleci: publish_snapshot"

If you want your PR to be merged, it has to pass all the CI checks.

If you can't get the PR to a green state due to flakes or broken master, please try rebasing to master and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help.

[brandonroberts]

Caretaker note: integration_test failure is unrelated

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}