docs: target search results

This PR updates the algolia search script such that results are filtered
based on your currently selected version (or latest if you're on the
main splash page).

Signed-off-by: Spencer Smith <spencer.smith@talos-systems.com>

website/layouts/partials/hooks/body-end.html

@@ -3,6 +3,24 @@
 
 <script src="https://cdn.jsdelivr.net/npm/@docsearch/js@3"></script>
 
+<!--
+this targets the facets of algolia search to only return the version you're actively looking at
+except in the case of not having a version (being on the main page) and then it'll return "latest".
+-->
+{{ if ne $currentVersion "" }}
+<script>
+  docsearch({
+    appId: "D72DGJBSSA",
+    apiKey: "49ca9541d72f7814b88a3a9204988360",
+    indexName: "talos",
+    container: '#algolia-search',
+    debug: true,
+    searchParameters: {
+      facetFilters: ['version:{{ $currentVersion}}'],
+    },
+  });
+</script>
+{{ else }}
 <script>
   docsearch({
     appId: "D72DGJBSSA",
@@ -15,6 +33,7 @@
     },
   });
 </script>
+{{ end }}
 
 
 <!--