Style guide updated for code point markup

https://w3c.github.io/i18n-activity/guidelines/editing#codepoints 
describes the approach we have discussed.

The commit is 
https://github.com/w3c/i18n-activity/commit/92835e370200962503e468aa5d10b58d1c116764

ri

Received on Friday, 23 September 2022 08:35:53 UTC