Motivation

As per https://docusaurus.io/docs/en/search#extra-search-options

Any occurrences of "VERSION" or "LANGUAGE" will be replaced by the version or language of the current page, respectively.

However, the current implementation is currently broken, while algolia docsearch expect something like '1.3.0', we provide 'current' as the version if we are currently in the latest stable version.

https://github.com/facebook/Docusaurus/blob/c5661b0e1e131803709852adc2283fb4894aabcc/lib/core/Site.js#L36-L43

https://github.com/facebook/Docusaurus/blob/c5661b0e1e131803709852adc2283fb4894aabcc/lib/core/Site.js#L130-L134

Docusaurus.io docsearch is working fine because we don't search according to current version.

Have you read the Contributing Guidelines on pull requests?

Yes

Test Plan

Use this algolia index for testing and use version facetfilters

algolia: {
    apiKey: 'c53337307f1787a9199348cd8263f666',
    indexName: 'docusaurus_meta',
    algoliaOptions: {
      facetFilters: [ "language:LANGUAGE", "version:VERSION" ] 
    }
  },

Before (search is broken)

After this PR (search according to current version)