fix(readme): update link to npm

Author: Gabriel P.

README.md

@@ -2,20 +2,22 @@
 
 [![CI](https://github.com/PlanetHoster/ph-node-api/actions/workflows/ci.yml/badge.svg)](https://github.com/PlanetHoster/ph-node-api/actions/workflows/ci.yml)
 
-[![NPM](https://nodei.co/npm/@planethoster-oss/api.png)](https://nodei.co/npm/@planethoster-oss/api/)
+[![NPM](https://nodei.co/npm/@planethoster-oss/api.png)](https://www.npmjs.com/package/@planethoster-oss/api)
 
 NodeJS PlanetHoster API integration.
 
 Please refer to the documentation of the [PlanetHoster API](https://apidoc.planethoster.com/) for all endpoints details.
 
 ## Installation
+
 ```
 npm install @planethoster-oss/api
 ```
 
 ## Usage
+
 ```javascript
-const PhNodeApi = require('@planethoster-oss/api');
+const PhNodeApi = require("@planethoster-oss/api");
 
 async function testConnection(api) {
   try {
@@ -26,9 +28,9 @@ async function testConnection(api) {
 }
 
 const api = new PhNodeApi({
-  api_key: 'API_KEY',
-  api_user: 'API_USER'
+  api_key: "API_KEY",
+  api_user: "API_USER",
 });
 
 testConnection(api);
-```
+```