docs: Move the L-Developer Preview samples page to the Developer Samples area

Change-Id: I307acca1dd3105768ed5c72995b1c7e67bea0612
diff --git a/docs/html/samples/index.jd b/docs/html/samples/index.jd
index ab15e32..a44a22b 100644
--- a/docs/html/samples/index.jd
+++ b/docs/html/samples/index.jd
@@ -1,5 +1,5 @@
 page.title=Samples
-page.tags=samples,examples,code
+page.tags="examples","code"
 
 @jd:body