Update form-validation.md

changes netlify.com to netlify.app

Author: yash1120

src/v2/cookbook/form-validation.md

@@ -333,7 +333,7 @@ We set up the total value as a computed value, and outside of that bug I ran int
 
 ## Server-side Validation
 
-In my final example, we built something that makes use of Ajax to validate at the server. The form will ask you to name a new product and will then check to ensure that the name is unique. We wrote a quick [Netlify](https://netlify.com/) serverless action to do the validation. While it isn't terribly important, here is the logic:
+In my final example, we built something that makes use of Ajax to validate at the server. The form will ask you to name a new product and will then check to ensure that the name is unique. We wrote a quick [Netlify](https://netlify.app/) serverless action to do the validation. While it isn't terribly important, here is the logic:
 
 ``` js
 exports.handler = async (event, context) => {
@@ -395,7 +395,7 @@ Basically any name but "vista", "empire", and "mbp" are acceptable. Ok, so let's
 There isn't anything special here. So let's go on to the JavaScript.
 
 ``` js
-const apiUrl = 'https://vuecookbook.netlify.com/.netlify/functions/product-name?name=';
+const apiUrl = 'https://vuecookbook.netlify.app/.netlify/functions/product-name?name=';
 
 const app = new Vue({
   el: '#app',