Minor fix on demo

Author: rafaelcamargo

website/src/scripts/components/demo/demo.js

@@ -31,7 +31,7 @@ export default {
       const code = `
 const cep = require('cep-promise');
 
-cep('04551-010').then(console.log);
+cep('04.551-010').then(console.log);
 `;
 
       const highlightedCode = Prism.highlight(

website/src/scripts/components/demo/demo.test.js

@@ -11,7 +11,7 @@ function buildExpectedHighlightedCode(){
   const code = `
 const cep = require('cep-promise');
 
-cep('04551-010').then(console.log);
+cep('04.551-010').then(console.log);
 `;
   return Prism.highlight(
     code,