docs: fix naming miss and improve with anchor reference in router guide

[chigix]

Signed-off-by: Richard Lea chigix@zoho.com

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?

Only a few tweak in documentation friendlyness without any relation to feature definition.

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

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[chigix]

@googlebot I signed it!

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[mary-poppins]

You can preview 8edb5ae at https://pr30225-8edb5ae.ngbuilds.io/.

[brandonroberts]

Add in router guide to git commit message

[brandonroberts]

Suggested change

	each time you selected a different hero by visiting the list component previously.
	each time you selected a different hero from the list of heroes.

[mary-poppins]

You can preview dd8c5df at https://pr30225-dd8c5df.ngbuilds.io/.

[mary-poppins]

You can preview ecb5a03 at https://pr30225-ecb5a03.ngbuilds.io/.

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