Add __('<your_string>') method in Confirm Widget Examples

[magehardik]

Purpose of this pull request

For Confirm widget, Add __('<your_string>') method in Examples because this method is used for translation of the string.

This pull request (PR) ...

Affected DevDocs pages

• https://devdocs.magento.com/guides/v2.3/javascript-dev-guide/widgets/widget_confirm.html
• https://devdocs.magento.com/guides/v2.2/javascript-dev-guide/widgets/widget_confirm.html
• https://devdocs.magento.com/guides/v2.1/javascript-dev-guide/widgets/widget_confirm.html

Links to Magento source code

• https://github.com/magento/magento2/blob/2.3/app/code/Magento/Ui/view/base/web/js/modal/confirm.js
• https://github.com/magento/magento2/blob/2.2/app/code/Magento/Ui/view/base/web/js/modal/confirm.js
• https://github.com/magento/magento2/blob/2.1/app/code/Magento/Ui/view/base/web/js/modal/confirm.js

[devops-devdocs]

An admin must run tests on this PR before it can be merged.

[ghost]

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