docs: fix l preview bugs

Change-Id: Ic89fea620ba458c604ccdeeb6da471c807a71fef
diff --git a/docs/html/preview/api-overview.jd b/docs/html/preview/api-overview.jd
index 8ec2470..284ad2a 100644
--- a/docs/html/preview/api-overview.jd
+++ b/docs/html/preview/api-overview.jd
@@ -1,4 +1,4 @@
-page.title=L Developer Preview APIs
+page.title=API Overview
 excludeFromSuggestions=true
 sdk.platform.apiLevel=20
 @jd:body