docs: Change Eclipse deprecation language on sdk/index.html page

text per J.Eason
b/18668828

Change-Id: I9d95a45401e1ec18a3068e71834cdc2054e85a05
diff --git a/docs/html/sdk/index.jd b/docs/html/sdk/index.jd
index 7b40f00..97baeaf 100644
--- a/docs/html/sdk/index.jd
+++ b/docs/html/sdk/index.jd
@@ -429,8 +429,9 @@
 </div>
 
 
-<p>If you've been using Eclipse with ADT, be aware that the ADT plugin is no longer in active
-development, so you should migrate to Android Studio as soon as possible. For help moving projects,
+<p>If you have been using Eclipse with ADT, be aware that Android Studio is now the official IDE
+for Android, so you should migrate to Android Studio in order to continue to receive all the
+latest IDE updates. For help moving projects,
 see <a href="{@docRoot}sdk/installing/migrate.html">Migrating to Android
 Studio</a>.</p>