Update links for all files under sdk/ that moved to studio/

Change-Id: I624621dfd7df0f441d0b559e5a12029e5e299964
diff --git a/docs/html/preview/overview.jd b/docs/html/preview/overview.jd
index bd17ee0..0369490 100644
--- a/docs/html/preview/overview.jd
+++ b/docs/html/preview/overview.jd
@@ -218,7 +218,7 @@
 
 <h3 id="sdk_tools">SDK tools</h3>
 
-<p>You can download these components through the SDK Manager in <a href="{@docRoot}sdk/installing/adding-packages.html">Android Studio</a>:</p>
+<p>You can download these components through the SDK Manager in <a href="{@docRoot}studio/intro/update.html">Android Studio</a>:</p>
 
 <ul>
   <li> N Developer Preview <strong>SDK and tools</strong>