Improve wording in 3.8 release notes

Change-Id: I6bea2ce08031bac8ad7a8ff9e44daa33e3be27f6
diff --git a/pages/site/releases/3.8.md b/pages/site/releases/3.8.md
index a811857..2915bef 100644
--- a/pages/site/releases/3.8.md
+++ b/pages/site/releases/3.8.md
@@ -735,7 +735,7 @@
   * [Change 404018](https://gerrit-review.googlesource.com/c/gerrit/+/404018):
   Add option to populate 'starred' field for change queries.
 
-    `star` option can must now be provided to include the `starred` field in
+    A `star` option can now be provided to include the `starred` field in
     `ChangeInfo`, which indicates if the change is starred by the current user or not.
 
 * New Features
@@ -753,7 +753,7 @@
   * [Change 406004](https://gerrit-review.googlesource.com/c/gerrit/+/406004):
   Add timer for git/upload-pack/phase_searching_for_* phases.
 
-    Add metrics for the  "Finding sources" phase, which is critical for an optimal
+    Add metrics for the "Finding sources" phase, which is critical for an optimal
     Git/HTTP performance.
 
   * [Change 402497](https://gerrit-review.googlesource.com/c/gerrit/+/402497):