Add asciidoc support for generated plugin list (#72292)

* add asciidoc support for generated plugin list

Try level offset "=+2" instead of "=+1" to stop the inlining of the includes.

remove +2 back to +1

* Remove asciidoc, switch to regex. Rearrange dev guide to avoid nesting limit.

* Add tests for regex

* add a description to not throw off the table. Remove the heading from the paragraph snippet.

* Fix more READMEs so table renders correctly

* Update plugin list

* Remove code-exploration file, moved to plugin-list

* fix typo

* Add link to developer examples

* Update plugin list

* fix typo

.ci/pipeline-library/src/test/prChanges.groovy

@@ -90,7 +90,7 @@ class PrChangesTest extends KibanaBasePipelineTest {
  props([
  githubPrs: [
  getChanges: { [
- [filename: 'docs/developer/architecture/code-exploration.asciidoc'],
+ [filename: 'docs/developer/plugin-list.asciidoc'],
  ] },
  ],
  ])