docs(common): update hello-world-example.html

[injune1123]

Correct an error on the what-is-angular documentation
https://angular.io/guide/what-is-angular

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.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

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[jessicajaniuk]

@injune1123 Thanks for the PR. If you take a look at the live example in the docs here and view the rendered DOM in devtools, you'll see the current example code in the docs is actually correct. It states When Angular renders this component, the resulting DOM looks like this:, and shows that example. Here's what it looks like when rendered in the DOM.

I think your suggested fix is what you would put in the component template rather than what is rendered in the dom. Am I correct in that assumption?

[jessicajaniuk]

I'm going to close this PR for now, but we appreciate the PR! Feel free to comment or re-open if there are additional changes here you'd like to make.

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