docs: update how to deploy to vercel (#474)

Author: FajarKim

README.md

@@ -328,10 +328,9 @@ Step-by-step guide on setting up your own Vercel instance.
 7. To import a project, click the `Add New...` or `+` button and select the `Project` option.
 8. Click the Continue with GitHub button, search for the required Git Repository and import it by clicking the `Import` button. Alternatively, you can import a Third-Party Git Repository using the `Import Third-Party Git Repository` link at the bottom of the page.
 9. Create a personal access token (PAT) [here](https://github.com/settings/tokens/new) and enable the `repo` and `user` permissions (this allows access to see private repo and user stats).
-10. Add the PAT as an environment variable named `GH_TOKEN_1`.
-11. Repeat step number 9 and add PAT up to the `GH_TOKEN_3` environment variable.
-12. In build and output settings, you set install command toggle and add command `npm install typescript`.
-13. Click deploy, and you're good to go. See your domains to use the API!
+10. Add the PAT as an environment variable named `GH_TOKEN`.
+11. In build and output settings, you set install command toggle and add command `npm install typescript`.
+12. Click deploy, and you're good to go. See your domains to use the API!
 
 [![Deploy](https://raw.githubusercontent.com/FajarKim/FajarKim/master/images/deploy-on-vercel.svg)](https://vercel.com/import/project?template=https://github.com/FajarKim/github-readme-profile)