Docs: Fixing the few broken links post L release.

Bug: 18226820
Change-Id: I36a1d437cea9cf72f411a702e33cb5fc125e9d79
diff --git a/src/devices/tech/input/keyboard-devices.jd b/src/devices/tech/input/keyboard-devices.jd
index 0c6ba08..74bafaa 100644
--- a/src/devices/tech/input/keyboard-devices.jd
+++ b/src/devices/tech/input/keyboard-devices.jd
@@ -6430,7 +6430,7 @@
 </ol>
 <h3 id="sources">Sources</h3>
 <ol>
-<li><a href="http://www.usb.org/developers/devclass_docs/Hut1_12v2.pdf">USB HID Usage Tables v1.12</a></li>
+<li><a href="http://www.usb.org/developers/hidpage/Hut1_12v2.pdf">USB HID Usage Tables v1.12</a></li>
 <li>Linux 2.6.39 kernel: include/linux/input.h, drivers/hid/hid-input.c</li>
 <li>Android ICS: qwerty.kl, Generic.kl, KeyEvent.java</li>
 </ol>