Feature: Add alternative

[cefoo]

Request: Add synonyms in articles or front matter

There are topics which are named in a variety of ways. The audience may look for information using either term.

Examples

1-

• data privacy
• data security
• data confidentiality

2-

• machine translation
• AI translation
• automated translation

3-

• quality estimation
• quality prediction

4-

• rule-based machine translation
• rules-based machine translation

[bittlingmayer]

In PR #426 @cefoo wrote:

Yeah, we should add them to the article body, but perhaps also to the front matter.
Perhaps alternateName can be an option, as it is supported by Google Rich Results.

That sounds perfect.

[cefoo]

Note: the alternateName solution doesn't work for our jekyll-seo-tag plugin.