chore(integrations): Update Vercel integration docs + screenshots (#5277)

This PR will update the docs for installing Vercel on Sentry SaaS. There was some outdated information and screenshots. To be safe, I left in the troubleshooting section with another older looking screenshot, but I never encountered that Issue with an ad blocker, so it might be safe to remove.

Author: leeandher

src/docs/product/integrations/deployment/vercel/index.mdx

@@ -18,9 +18,9 @@ Sentry owner, manager, or admin permissions are required to install this integra
 
 </Note>
 
-1. Visit <https://vercel.com/integrations/sentry/add>
+1. Visit <https://vercel.com/integrations/sentry>
 
-2. Select your account and click "Add".
+2. Click "Add Integration" and follow the setup to select the Vercel scope, the Vercel projects, and review the app's permissions.
 
    ![Sentry modal showing Vercel installation](vercel_install.png)
 
@@ -42,7 +42,7 @@ Use Vercel to [link projects](#project-linking) for uploading source maps and no
 
    ![Sentry modal showing linking Sentry project to Vercel project](vercel_link_project.png)
 
-   - This step will generate environment variables in the selected Vercel project. Having these set means you can skip the [CLI Configuration step](https://github.com/getsentry/sentry-webpack-plugin#cli-configuration) in the Sentry Webpack Plugin setup. You can see these in Vercel in **Project Settings** > **General** > **Environment Variables**.
+   - This step will generate environment variables in the selected Vercel project. Having these set means you can skip the [CLI Configuration step](https://github.com/getsentry/sentry-webpack-plugin#cli-configuration) in the Sentry Webpack Plugin setup. You can see these in Vercel in **Project Settings > General > Environment Variables**.
 
    ![Sentry modal showing linking Sentry project to Vercel project](vercel_env_vars.png)
 
@@ -63,13 +63,9 @@ Use Vercel to [link projects](#project-linking) for uploading source maps and no
 
 ## Uninstallation
 
-1. The integration must be uninstalled from Vercel. Visit the Vercel integration configuration page (**Organization Settings** > **Integrations** > **Vercel** > **Configurations**) and click "Uninstall" then "Visit Vercel" in the modal that pops up.
+1. You can uninstall the integration from Vercel or Sentry. To do so in Sentry, navigate to **Settings > Integrations > Vercel > Configurations**, click "Uninstall", and confirm.
 
-   ![Sentry modal showing uninstalling Vercel integration](vercel_uninstall.png)
-
-2. Click "Remove Configuration".
-
-3. Delete the internal integration that was created by navigating to **Organization Settings** > **Developer Settings** and clicking the trash can icon next to **Vercel Internal Integration**. You will be prompted to confirm the deletion by entering a string provided in the modal. Enter the string and click "Confirm" to finalize the deletion.
+2. Delete the internal integration that was created by navigating to **Settings > Developer Settings** and clicking the trash can icon next to "Vercel Internal Integration". You will be prompted to confirm the deletion by entering a string provided in the modal. Enter the string and click "Confirm" to finalize the deletion:
 
    ![Sentry modal showing uninstalling Vercel integration](vercel_delete_internal_integration.png)