docs: fix several links

Change-Id: I89d9fd64dc22c90680bb05415cc966c255165af9
diff --git a/java/android/net/sip/package.html b/java/android/net/sip/package.html
index eb683d0..3c4cc23 100644
--- a/java/android/net/sip/package.html
+++ b/java/android/net/sip/package.html
@@ -4,7 +4,7 @@
 making and answering VOIP calls using SIP.</p>
 
 <p>For more information, see the
-<a href="{@docRoot}guide/topics/network/sip.html">Session Initiation Protocol</a>
+<a href="{@docRoot}guide/topics/connectivity/sip.html">Session Initiation Protocol</a>
 developer guide.</p>
 {@more}