Add bbe@ to list of reviewers

Change-Id: I7dea47e73cbfbfa48a8924f3a633215c06730b22
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/57425
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Bob Beck <bbe@google.com>
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5e161e8..69dbc20 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -37,8 +37,8 @@
 
     git push origin HEAD:refs/for/master
 
-The output will then give you a link to the change. Add `agl@google.com` and
-`davidben@google.com` as reviewers.
+The output will then give you a link to the change. Add `agl@google.com`,
+`davidben@google.com`, and `bbe@google.com` as reviewers.
 
 Pushing a commit with the same Change-Id as an existing change will upload a new
 version of it. (Use the `git rebase` or `git commit --amend` commands.)