docs: Update theme

Author: ktquez

package-lock.json

@@ -83,7 +83,7 @@
     "vue-jest": "^3.0.5",
     "vue-template-compiler": "^2.6.11",
     "vuepress": "^1.3.1",
-    "vuepress-theme-default-vue-a11y": "^0.1.7"
+    "vuepress-theme-default-vue-a11y": "^0.1.8"
   },
   "directories": {
     "doc": "docs",