Reading time doesn't display plural form of minute

[yzgyyang]

• This is a question about using the theme.
• This is a feature request.
• I have updated all gems with bundle update.
• I have tested locally with bundle exec jekyll build.
• I believe this to be a bug with the theme --- not Jekyll, GitHub Pages or one of the bundled plugins.

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Environment informations

• Minimal Mistakes version: 4.5.0
• github-pages or jekyll gem version: 2.6.11
• **Operating system: ** Arch Linux x64

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Expected behavior

For displaying reading time estimates, 3 minute read will be displayed instead of 3 minutes read or at least 3 minute(s) read.

Steps to reproduce the behavior

Add read_time: true and create a long article.

[mmistakes]

This is intentional, see #356 for context.

If you prefer minute(s) read instead of minute read you can change that text to whatever you'd like in _data/ui-text.yml.

 minute_read: "minute read"