fix: prevent yarn content move from converting double quotes to single quotes

[OnkarRuikar]

• Addresses Move Web/API statics to _static URLs content#26132 (comment)

Problem

We prefer double quotes in front-matter YAML to wrap title attributes with special characters.
At the moment in content repo we have ~5514 double double quotes and only ~147 single quotes.

But the yarn content move converts double quotes to singe quotes:

title: "AbortSignal: abort() static method"
to
title: 'AbortSignal: abort() static method'

This pushes unnecessory changes to the content repo and confuses reviewers.

Solution

Configure js-yaml.dump() method to use double quotes:

yaml.dump(saveMetadata, {quotingType: '"'})}

Testing

Tested yarn content move locally with and without the changes.

[OnkarRuikar]

Also this is going to be useful for the front-matter linter: https://github.com/mdn/yari/pull/8295/files#diff-022d530d6d8cbb2bffeada188699e3bf4767534111c6a1497e21a9e5b21d061aR133-R137

[teoli2003]

This will prevent a robot war between Prettier and Yari 🤣 As the former changes them into " and yarn move into '.

🤖 vs 🤖

[fiji-flo]

Thanks and sorry for the delay. 🙏