[style guide] Use the international standard for punctuation inside quotes

[zacharysarah]

This is a...

• Feature Request
• Bug Report

Problem: From #5029: We should document that K8s follows the international standard for punctuation inside quotes. For example, the American standard:

events are recorded with an associated "stage."

...versus the international standard:

events are recorded with an associated "stage".

Proposed Solution: Add a page for punctuation to the K8s style guide.