Fix release notes

RELEASENOTES.md

@@ -9,7 +9,7 @@
         in a buffering state
         in a buffering state
     *   Switch Guava dependency from `implementation` to `api`
     *   Switch Guava dependency from `implementation` to `api`
         ([#7905](https://github.com/google/ExoPlayer/issues/7905),
         ([#7905](https://github.com/google/ExoPlayer/issues/7905),
-        ([#7993](https://github.com/google/ExoPlayer/issues/7993)).
+        [#7993](https://github.com/google/ExoPlayer/issues/7993)).
     *   Add 403, 500 and 503 to the list of HTTP status codes that can trigger
     *   Add 403, 500 and 503 to the list of HTTP status codes that can trigger
         failover to another quality variant during adaptive playbacks.
         failover to another quality variant during adaptive playbacks.
 *   Data sources:
 *   Data sources: