CLDR-17566 pre-test github pages before merge to main, also fix some items

[srl295]

• on PRs, we should build the gh-pages action to make sure there aren't syntax errs.
• Also, fix some syntax errs inadvertently brought in in CLDR-17566 converting design proposals p10 #3855
• deep details: https://talk.jekyllrb.com/t/code-block-is-improperly-handled-and-generates-liquid-syntax-error/7599/2

CLDR-17566

• This PR completes the ticket.

ALLOW_MANY_COMMITS=true

[srl295]

hooray it failed

      Generating... 
  Liquid Exception: Liquid syntax error (line 111): Variable '{{NUMBER\_OF\_WEEKS, plural, =0 {0 wks}' was not properly terminated with regexp: /\}\}/ in site/development/development-process/design-proposals/xmb.md
/opt/hostedtoolcache/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/liquid-4.0.4/lib/liquid/block_body.rb:136:in `raise_missing_variable_terminator': Liquid syntax error (line 111): Variable '{{NUMBER\_OF\_WEEKS, plural, (Liquid::SyntaxError)

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• docs/site/development/development-process/design-proposals/xmb.md is different

View Diff Across Force-Push

~ Your Friendly Jira-GitHub PR Checker Bot

[jira-pull-request-webhook]

Hooray! The files in the branch are the same across the force-push. 😃

~ Your Friendly Jira-GitHub PR Checker Bot

[srl295]

@chpy04 this wasn't needed but i decided to put this in an XML code fence.

The real fix is the {% raw… directive.

[macchiati]

Looks reasonable to me (but not knowing yml...)