Update hx-select.md

[jaredef]

autistic levels of syntactic plural detection

Description

Please describe what changes you made, and why you feel they are necessary. Make sure to include
code examples, where applicable.

Corresponding issue:

Testing

Please explain how you tested this change manually, and, if applicable, what new tests you added. If
you're making a change to just the website, you can omit this section.

Checklist

• [x ] I have read the contribution guidelines
• I have targeted this PR against the correct branch (master for website changes, dev for
  source changes)
• This is either a bugfix, a documentation update, or a new feature that has been explicitly
  approved via an issue
• I ran the test suite locally (npm run test) and verified that it succeeded

[jaredef]

Pedantically changed ```html snippet div id to match the subsequent denoted thereafter of info-detail. Please forgive this transgression against your time and intellect.

[Telroshan]

Autism that fixes typos and docs is always welcome, don't worry!