docs(router): update navigation event example to use event.code

[portneon]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/main/contributing-docs/commit-message-guidelines.md
• 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.dev 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

[JeanMeche]

Thanks for this

[portneon]

Thanks for this
It’s my pleasure, sir. Thank you for maintaining such a useful product.

[thePunderWoman]

This PR was merged into the repository. The changes were merged into the following branches:

• main: 93d548f
• 20.3.x: 68c5556
• 21.0.x: 7928ff1