docs: Use a single value for algolia version meta

As-is we have an array like `["v0.13.4", "latest"]` but it seems that
we aren't referencing it as such, its trying to compare a string
version.

It looks like on the `latest` urls we would set the facetFilter to
be the explicit version, so we'll just stick with that for the meta
tags too.

Signed-off-by: Patrick East <east.patrick@gmail.com>

docs/website/layouts/partials/meta.html

@@ -7,7 +7,6 @@
 {{ $twitter     := site.Params.social.twitter }}
 {{ $latest      := index site.Data.releases 0 }}
 {{ $version     := index (split .File.Path "/") 1 }}
-{{ $isLatest    := eq $latest $version }}
 
 <!-- Basic metadata -->
 <meta charset="utf-8">
@@ -46,11 +45,7 @@
 
 <!-- Algolia metadata -->
 <meta name="docsearch:language" content="en" />
-{{ if $isLatest }}
-<meta name="docsearch:version" content='["{{ $version }}", "latest"]' />
-{{ else }}
 <meta name="docsearch:version" content="{{ $version }}" />
-{{ end }}
 
 <!-- Site generator -->
 {{ hugo.Generator }}