Docs: Fixing links between graphics pages

Bug: 24739259
Change-Id: I0adbbc627d6888a056a16748c19bc97b3ddd15ac
diff --git a/src/devices/graphics/index.jd b/src/devices/graphics/index.jd
index 3bba9dd..1c5b025 100644
--- a/src/devices/graphics/index.jd
+++ b/src/devices/graphics/index.jd
@@ -209,8 +209,9 @@
 <p>Since Android graphics offer no explicit parallelism, vendors have long
 implemented their own implicit synchronization within their own drivers. This
 is no longer required with the Android graphics synchronization framework. See
-the <a href="#explicit_synchronization">Explicit synchronization</a> section
-for implementation instructions.</p>
+the
+<a href="{@docRoot}devices/graphics/implement.html#explicit_synchronization">Explicit
+synchronization</a> section for implementation instructions.</p>
 
 <p>The synchronization framework explicitly describes dependencies between
 different asynchronous operations in the system. The framework provides a