Fixed view model name on Layout XML file

[ghost]

Purpose of this pull request

This pull request (PR) correction the model view name, the name must be separated by an underscore

Affected DevDocs pages

• https://magento.stackexchange.com/questions/227479/block-getviewmodel-returning-null/318026#318026

Links to Magento source code

• ...

https://magento.stackexchange.com/questions/227479/block-getviewmodel-returning-null/318026#318026

[hostep]

Thanks @DeoJr, but it looks like there are already at least 2 competing PR's around this topic:

• #8458 getViewModel() results in null #8459
• Fix set and get view model method code #8494

[dobooth]

Thanks for pointing that out, @hostep. I think it's proper to take the first PR that fixed it, so we will go with #8459 and close these other two. But I still would like a technical review check on #8459 from someone. And thanks to @pawan and @DeoJr for submitting PRs around this.

[ghost]

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