fix typo

Author: inventarSarah

docs/platforms/javascript/guides/solidstart/index.mdx

@@ -168,7 +168,7 @@ For example, update your scripts in `package.json`.
 
 ## Add Readable Stack Traces to Errors
 
-To upload source maps, you need to pass an auth tokens to `withSentry` explicitly with the `authToken`
+To upload source maps, you need to pass an auth token to `withSentry` explicitly with the `authToken`
 option. We highly recommend to store this token in an environment variable for security. You can also use the `SENTRY_AUTH_TOKEN` environment variable or have an `.env.sentry-build-plugin` file in the
 working directory when building your project.