docs: rewrite Interpolation section and add Interpolation example

[kapunahelewong]

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
[x] 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?

Add new document for Interpolation. This is part of the Template Syntax break out.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

Special thanks to @trotyl and @brandonroberts :)

[trotyl]

Should use such as, there're also other bitwise operators like ^, ~, <<, >>, <<<, >>> not being supported.

[kapunahelewong]

added

[mary-poppins]

You can preview c96cc39 at https://pr25170-c96cc39.ngbuilds.io/.

[mary-poppins]

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[mary-poppins]

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[kapunahelewong]

@jenniferfell the interpolation info is in the Template Syntax doc. Ready for your review.

[mary-poppins]

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[AndrewKushnir]

@kapunahelewong thanks for submitting a PR.

It looks like there was additional commit and a rebase after last approval/review. @brandonroberts could you please have a quick look and add "merge" label back?

Thank you.

[brandonroberts]

These are usually in the form of **Note:** Note text for alerts

[kapunahelewong]

Ah ok. Good to know. I can fix in a follow up PR or when I break them out so I don't cause any more hiccups. 🙃

[brandonroberts]

👍

[kapunahelewong]

@AndrewKushnir Oops! Thanks for your patience. :)

[ocombe]

@IgorMinar I checked the API data for this PR (https://api.github.com/repos/angular/angular/pulls/25170/reviews), I think that the problem is that there are 39 reviews, and by default a page of results is limited to 30 results, so that's why some of the results are ignored and it doesn't get the correct count.
I'll fix the bot

[IgorMinar]

Thanks Olivier!

…

On Fri, Jan 11, 2019 at 12:13 AM Olivier Combe ***@***.***> wrote: @IgorMinar <https://github.com/IgorMinar> I checked the API data for this PR, I think that the problem is that there are 39 reviews, and by default a page of results is limited to 30 results, so that's why some of the results are ignored and it doesn't get the correct count. I'll fix the bot — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#25170 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AANM6JWNjeeqgFKWQxFqVWL1gc97GoGSks5vCEeWgaJpZM4Vkkk0> .

[ocombe]

fixed

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