docs(ngValue) Replace input[select] with option for clarity

[timraymond]

Request Type: docs

How to reproduce:

Component(s): forms

Impact:

Complexity: small

This issue is related to:

Detailed Description:

It is impossible to create an input[select], so it appears the intention
here was actually option.

While ngOptions would probably be easier to use in most cases, someone may have a use case for using ngValue with option which is why I decided to change it in lieu of deleting it, as had been mentioned in the issue.

Other Comments:

[mary-poppins]

Thanks for the PR! Please check the items below to help us merge this faster. See the contributing docs for more information.

• Uses the issue template (#8203)

If you need to make changes to your pull request, you can update the commit with git commit --amend.
Then, update the pull request with git push -f.

Thanks again for your help!

[mary-poppins]

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[mary-poppins]

CLA signature verified! Thank you!

Someone from the team will now triage your PR and it will be processed based on the determined priority (doc updates and fixes with tests are prioritized over other changes).