more fixes to solve library location path.
Turns out the slashes weren't in the right places.
Following ag/2143196

Change-Id: Ib7cda0328362f304fc8df9e8d009b8b82df1db93
diff --git a/res/assets/templates-sdk/head_tag.cs b/res/assets/templates-sdk/head_tag.cs
index 0d85b8c..1f24860 100644
--- a/res/assets/templates-sdk/head_tag.cs
+++ b/res/assets/templates-sdk/head_tag.cs
@@ -82,7 +82,7 @@
             elif:samples ?>/samples<?cs
             elif:reference ?>/reference<?cs
             elif:downloads ?>/downloads<?cs /if ?><?cs
-          elif:library.root ?><?cs var:library.root ?><?cs
+          elif:library.root ?>/reference/<?cs var:library.root ?><?cs
           else ?><?cs
             if:(guide||develop||training||reference||tools||sdk||samples) ?><?cs
               if:guide ?>/guide<?cs
diff --git a/src/com/google/doclava/Doclava.java b/src/com/google/doclava/Doclava.java
index e027450..52f11aa 100644
--- a/src/com/google/doclava/Doclava.java
+++ b/src/com/google/doclava/Doclava.java
@@ -309,7 +309,7 @@
       } else if (a[0].equals("-yaml")) {
         yamlNavFile = a[1];
       } else if (a[0].equals("-dac_libraryroot")) {
-        libraryRoot = a[1];
+        libraryRoot = ensureSlash(a[1]);
         mHDFData.add(new String[] {"library.root", a[1]});
       } else if (a[0].equals("-dac_dataname")) {
         mHDFData.add(new String[] {"dac_dataname", a[1]});