docs: misc changes to overview and add known issues link to sdk tools notes

Change-Id: Ia1c6b7947eb861c5bf32107c3efed3279e890b8e
diff --git a/docs/html/sdk/android-4.0.jd b/docs/html/sdk/android-4.0.jd
index b4fbe72..b8cd947 100644
--- a/docs/html/sdk/android-4.0.jd
+++ b/docs/html/sdk/android-4.0.jd
@@ -100,8 +100,8 @@
       <li><a href="#Multimedia">Multimedia</a></li>
       <li><a href="#Bluetooth">Bluetooth</a></li>
       <li><a href="#AndroidBeam">Android Beam (NDEF Push with NFC)</a></li>
-      <li><a href="#P2pWiFi">Peer-to-peer Wi-Fi</a></li>
-      <li><a href="#NetworkData">Network Data</a></li>
+      <li><a href="#WiFiDirect">Wi-Fi Direct</a></li>
+      <li><a href="#NetworkUsage">Network Usage</a></li>
       <li><a href="#RenderScript">RenderScript</a></li>
       <li><a href="#A11y">Accessibility</a></li>
       <li><a href="#Enterprise">Enterprise</a></li>
@@ -653,7 +653,7 @@
 
 
 
-<h3 id="P2pWiFi">Peer-to-peer Wi-Fi</h3>
+<h3 id="WiFiDirect">Wi-Fi Direct</h3>
 
 <p>Android now supports Wi-Fi Direct for peer-to-peer (P2P) connections between Android-powered
 devices and other device types without a hotspot or Internet connection. The Android framework
@@ -739,7 +739,7 @@
 
 
 
-<h3 id="NetworkData">Network Data</h3>
+<h3 id="NetworkUsage">Network Usage</h3>
 
 <p>Android 4.0 gives users precise visibility of how much network data their applications are using.
 The Settings app provides controls that allow users to manage set limits for network data usage and