Excludes APG Landmark Examples Pages from site search

[howard-e]

Fixes #357 by excluding the following pages from the site search:

• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/general-principles.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/HTML5.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/banner.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/complementary.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/contentinfo.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/form.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/main.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/navigation.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/region.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/search.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/at.html
• https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/resources.html

I followed jekyll-tipue-search's README on doing the exclusions.

@shawna-slh please let me know if how the paths to the files are defined is okay. I verified locally with my wai-website build that all 12 pages are excluded from the site search.

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[howard-e]

cc @yatil

@mcking65 if this change lands, note that the links in the top comment will be excluded from the WAI website's site-wide search. https://www.w3.org/WAI/ARIA/apg/practices/landmark-regions/ will still be searchable which also links to these pages.

My comment on why is here: #358 (comment)

[shawna-slh]

Thanks. We're having issues with the site build and need to do important updates tomorrow, Thursday. Then y'all are off Friday. And I'm traveling for the next 2 weeks. I'll see if there's a time we can coordinate an update. Otherwise, it will be later in October.

[howard-e]

And I'm traveling for the next 2 weeks.

Safe travels!

I'll see if there's a time we can coordinate an update. Otherwise, it will be later in October.

Okay understood. I'll also be off Oct 16 - 30 as well, so you can check in with @ccanash for support if I'm not available when you're back.

[shawna-slh]

@remibetin Thank you for following up on this!

[remibetin]

Thanks @howard-e I have merged this PR.