Fix nit issues in 1.3.0-rc01 release notes

PiperOrigin-RevId: 608580903
(cherry picked from commit ebcb4e8)

Author: SheenaChhabra

RELEASENOTES.md

@@ -17,14 +17,14 @@ This release includes the following changes since the
     *   Stop double-encoding CMCD query parameters
         ([#1075](https://github.com/androidx/media/issues/1075)).
 *   Audio:
-    *   Improve silence skipping algorithm with smooth volume ramp, retained
+    *   Improve silence skipping algorithm with smooth volume ramp; retained
         minimal silence and more natural silence durations
         ([#7423](https://github.com/google/ExoPlayer/issues/7423)).
     *   Report the skipped silence more deterministically
         ([#1035](https://github.com/androidx/media/issues/1035)).
 *   Session:
     *   Fix issue where `MediaItem.RequestMetadata` with just non-null extras is
-        not sent transmitted between media controllers and sessions.
+        not transmitted between media controllers and sessions.
     *   Add constructor to `MediaLibrarySession.Builder` that only takes a
         `Context` instead of a `MediaLibraryService`.
 *   HLS Extension: