Update release comms (#1859)

- Stop publicizing the index page for both RCs and final releases (only
share the GitHub release)
- `USE_BAZEL_VERSION=last_rc` -> `USE_BAZEL_VERSION=X.Y.ZrcN`

cc @iancha1992
diff --git a/docs/release-playbook.md b/docs/release-playbook.md
index b7ce61d..fa04441 100644
--- a/docs/release-playbook.md
+++ b/docs/release-playbook.md
@@ -133,11 +133,9 @@
     ```
     Bazel 7.0.1rc1 is now available for those that want to try it out.
 
-    You can download it from here:
-        - https://releases.bazel.build/7.0.1/rc1/index.html
-        - https://github.com/bazelbuild/bazel/releases/tag/7.0.1rc1
+    You can download it from here: https://github.com/bazelbuild/bazel/releases/tag/7.0.1rc1
 
-    If you're using Bazelisk, you can point to the latest RC by setting USE_BAZEL_VERSION=last_rc.
+    If you're using Bazelisk, you can point to this RC by setting USE_BAZEL_VERSION=7.0.1rc1.
     
     Please test it out and report any issues [here](https://github.com/bazelbuild/bazel/issues) as soon as possible.
     A draft of the release notes can be found [here](https://docs.google.com/document/d/1pu2ARPweOCTxPsRR8snoDtkC9R51XWRyBXeiC6Ql5so/edit?usp=sharing).
@@ -147,6 +145,19 @@
 
 1.  Post on the #general channel on the [Bazel Slack](https://bazelbuild.slack.com/) announcing that a new RC is out. See [example](https://bazelbuild.slack.com/archives/CA31HN1T3/p1705095377557259).
 
+1.  Post a comment on all issues / PRs addressed in this RC to ask users to test (this is a manual step for now but will eventually be automated).
+
+    Issues:   
+      ```
+      A fix for this issue has been included in [Bazel 7.0.2 RC1](https://github.com/bazelbuild/bazel/releases/tag/7.0.2rc1). Please test out the release candidate and report any issues as soon as possible.
+    If you're using Bazelisk, you can point to the latest RC by setting USE_BAZEL_VERSION=7.0.2rc1. Thanks!
+      ```
+    PRs: 
+      ```
+      The changes in this PR have been included in [Bazel 6.5.0 RC2](https://github.com/bazelbuild/bazel/releases/tag/6.5.0rc2). Please test out the release candidate and report any issues as soon as possible.
+    If you're using Bazelisk, you can point to the latest RC by setting USE_BAZEL_VERSION=6.5.0rc2. Thanks!
+      ```
+
 1.  Trigger a new pipeline in BuildKite to test the release candidate with all the downstream projects.
     *   Go to https://buildkite.com/bazel/bazel-with-downstream-projects-bazel
     *   Click "New Build", then fill in the fields like this:
@@ -264,9 +275,7 @@
     *   Subject: Bazel 6.2.0 is released
     *   Body:
     ```
-    Bazel 6.2.0 is now available:
-    - https://github.com/bazelbuild/bazel/releases/tag/6.2.0
-    - https://releases.bazel.build/6.2.0/release/index.html
+    Bazel 6.2.0 is now available: https://github.com/bazelbuild/bazel/releases/tag/6.2.0
     ```
 1.  Post on the #general channel on the [Bazel Slack](https://bazelbuild.slack.com/) about the new release (same content as above).