Docs(nuxt): Do not slice the first two chars of the file name (#3152)

website/content/docs/nuxt.md

@@ -247,9 +247,10 @@ export default {
   generate: {
     routes: function() {
       const fs = require('fs');
+      const path = require('path');
       return fs.readdirSync('./assets/content/blog').map(file => {
         return {
-          route: `/blog/${file.slice(2, -5)}`, // Remove the .json from the end of the filename
+          route: `/blog/${path.parse(file).name}`, // Return the slug
           payload: require(`./assets/content/blog/${file}`),
         };
       });