fix: Fixed API typo and webhook checkerror (#6779)

## Issue
1.There was an Api typo with API under Developers section #6778
2. Webhook lacked an check method for the `TextInput` #6774

## After- 

<img width="649" alt="Screenshot 2024-08-29 at 2 13 21 AM"
src="https://github.com/user-attachments/assets/bc9595f8-533f-430e-bc18-56373983eec8">



https://github.com/user-attachments/assets/8e2b06bc-308a-48ad-8ecb-9d0a130877bc

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/utils/url/isValidUrl.ts

@@ -0,0 +1,8 @@
+export const isValidUrl = (url: string) => {
+  const urlRegex =
+    /^(https?:\/\/)?((([a-zA-Z0-9-]+\.)+[a-zA-Z]{2,})|(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|(localhost))(:\d+)?(\/[^\s]*)?(\?[^\s]*)?$/;
+
+  const urlPattern = new RegExp(urlRegex, 'i');
+
+  return !!urlPattern.test(url);
+};