docs: filter search results to match current docs

Author: afontcu

docs/.vuepress/config.js

@@ -30,7 +30,10 @@ module.exports = {
   themeConfig: {
     algolia: {
       apiKey: 'ee1b8516c9e5a5be9b6c25684eafc42f',
-      indexName: 'vue_test_utils'
+      indexName: 'vue_test_utils',
+      algoliaOptions: {
+        facetFilters: ['tags:current']
+      }
     },
     repo: 'vuejs/vue-test-utils',
     docsDir: 'docs',