Fix typo in Image::open exception message

[t-richards]

Description

Fixes a typo in the \Magento\Framework\Image::open exception message.

Previous message:

File {file} does not exists.

Corrected message:

File {file} does not exist.

Fixed Issues (if relevant)

N/A

Manual testing scenarios

1. Given that...

• There exists a page where an image is opened,
• but the actual image file does not exist,
• and the exception is not silently caught and ignored,

2. Expect to receive a properly-spelled exception message.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @orlangur, thank you for the review.
ENGCOM-1582 has been created to process this Pull Request

[magento-engcom-team]

@t-richards thank you for contributing. Please accept Community Contributors team invitation here to gain extended permissions for this repository.

[magento-engcom-team]

Hi @t-richards. Thank you for your contribution.
Changes from your Pull Request will be available with the upcoming 2.2.5 release.

Please, consider porting this solution across release lines.
You may use Porting tool to port commits automatically.

[t-richards]

@magento-engcom-team It does not appear that changes from this Pull Request made it into the 2.2.5 release.

https://github.com/magento/magento2/blob/2.2.5/lib/internal/Magento/Framework/Image.php#L52

[dmanners]

Hi @t-richards it looks like there was a miss-configuration with our bot and it had the wrong cut of date for changes to make it into the 2.2.5 release. Sorry for any inconvenience this has caused but your changes will be in the next release.