work_across_languages_and_platforms missing from `.docs` folder

[mcleo-d]

Description

The following content is missing from .docs which is resulting in broken links in the following markdown files.

[Working Across Technologies](./docs/work_across_languages_and_platforms)

Impacted Files and Content

The following are the markdown files impacted by the missing content.

• ./docs/posts.md
• ./docs/index3.md
• ./docs/intro.md
• ./docs/index.md

Pull request #87 has been raised that removes work_across_languages_and_platforms from README.md.