ICU-21480 BRS69RC update readmes for RC

See #1615
diff --git a/icu4c/readme.html b/icu4c/readme.html
index c1aaf83..a2fc138 100644
--- a/icu4c/readme.html
+++ b/icu4c/readme.html
@@ -23,8 +23,8 @@
         milestone - if the release note is a milestone release
 -->
 
-  <body>
-  <!-- <body class="rc"> -->
+  <!-- <body> -->
+  <body class="rc">
     <p class="only-draft"><b>Note:</b> This is a draft readme.</p>
 
     <h1>
diff --git a/icu4j/readme.html b/icu4j/readme.html
index da14a40..f6abb63 100644
--- a/icu4j/readme.html
+++ b/icu4j/readme.html
@@ -19,19 +19,19 @@
 <hr size="2" width="100%">
 
 <p>
-<b>Note:</b> This is a major release of ICU4J. It contains bug fixes and adds implementations
-of inherited API and introduces new API or functionality.
+<!-- <b>Note:</b> This is a major release of ICU4J. It contains bug fixes and adds implementations
+of inherited API and introduces new API or functionality. -->
 <!-- <b>Note:</b> This is a preview release of ICU4J 69.
 The contents of this document may not reflect the recent changes done
 for ICU 69 development. It is not recommended for production use. -->
 <!-- <b>Note:</b> This is a development milestone of ICU4J 69.
 The contents of this document may not reflect the recent changes done
 for ICU 69 development. It is not recommended for production use. -->
-<!-- <b>Note:</b> This is a release candidate of ICU4J 69.
+<b>Note:</b> This is a release candidate of ICU4J 69.
 The contents of this document may not reflect the recent changes done
 for ICU 69 development. This release candidate is intended for those
 wishing to verify ICU 69 integration before final release. It is not
-recommended for production use. -->
+recommended for production use.
 </p>
 <p>For the most recent release, see the <a
  href="http://www.icu-project.org/download/"> ICU4J