Adapt to new location of libcore

Change-Id: I20885f385cfb325be18c33862b8e4f293a8a6146
diff --git a/docs/porting-guide.html b/docs/porting-guide.html
index b5ac387..d23b903 100644
--- a/docs/porting-guide.html
+++ b/docs/porting-guide.html
@@ -24,7 +24,7 @@
 <h2>Core Libraries</h2>
 
 <p>
-The native code in the core libraries (chiefly <code>dalvik/libcore</code>,
+The native code in the core libraries (chiefly <code>libcore</code>,
 but also <code>dalvik/vm/native</code>) is written in C/C++ and is expected
 to work without modification in a Linux environment.  Much of the code
 comes directly from the Apache Harmony project.