Update introduction.mdx

Signed-off-by: tcaldwell-x <tcaldwell@twitter.com>

Author: tcaldwell-x

x-api/usage/introduction.mdx

@@ -13,7 +13,7 @@ There is a app rate limit of 50 requests per 15 minutes for this GET endpoint.
 
 ### Getting started
 
-To use this endpoint, you need a [bearer token](https://developer.x.com(/resources/fundamentals/authentication#app-only-authentication-and-oauth-2-0-bearer-token) from the [developer portal](https://developer.x.com/en/portal/dashboard). Once you have the bearer token,  you can call the usage API as shown below:
+To use this endpoint, you need a [bearer token](https://developer.x.com/resources/fundamentals/authentication#app-only-authentication-and-oauth-2-0-bearer-token) from the [developer portal](https://developer.x.com/en/portal/dashboard). Once you have the bearer token,  you can call the usage API as shown below:
 
       ```
       curl 'https://api.x.com/2/usage/tweets' --header 'Authorization: Bearer XXXXX'
@@ -50,4 +50,5 @@ Learn more about getting access to the X API v2 endpoints in our [getting start
 <Button href="https://app.getpostman.com/run-collection/9956214-784efcda-ed4c-4491-a4c0-a26470a67400">
   Run in Postman
 </Button>
-</div>
+
+</div>