[Backport] Fixed a couple of spelling mistakes

[mage2pratik]

Original Pull Request

#16980
#16928
#16889
#16880

Description

Fixed a couple of spelling mistakes.

Fixed Issues (if relevant)

N/A

Manual testing scenarios

N/A

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)

[sidolov]

@magento-engcom-team combine 17150 17148 17146

[magento-engcom-team]

Hi @sidolov. Thank you for your request. I'm working on combining the pull requests for you

[magento-engcom-team]

@mage2pratik all pull requests have been successfully combined together:

• merged [Backport] Reduce lengthy code of LoginPost #17150: [Backport] Reduce lengthy code of LoginPost
• merged [Backport] Microrefactoring in product gallery block helper #17148: [Backport] Microrefactoring in product gallery block helper
• merged [Backport] Array short syntax #17146: [Backport] Array short syntax

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution.
We will aim to release these changes as part of 2.1.15.
Please check the release notes for final confirmation.