cherrypick from Change-Id: I1f95ed281c3152a47d5a3c8b927ae2a23568ed1e
docs: fix game controller trademarks

Change-Id: I1eca030bad5bae0c581000fefffd5d3d49aac205
diff --git a/docs/html/sdk/android-3.1-highlights.jd b/docs/html/sdk/android-3.1-highlights.jd
index 3d132a3..88bc1ee 100644
--- a/docs/html/sdk/android-3.1-highlights.jd
+++ b/docs/html/sdk/android-3.1-highlights.jd
@@ -143,8 +143,8 @@
 <p>To make the platform even better for gaming, Android 3.1 adds support for
 most PC joysticks and gamepads that are connected over USB or Bluetooth HID.</p>
 
-<p>For example, users can connect Sony Playstation&trade; 3 and XBox 360&trade; game
-controllers over USB (but not Bluetooth), Logitech Dual Action&trade; gamepads and
+<p>For example, users can connect PlayStation<sup>&reg;</sup>3 and Xbox 360<sup>&reg;</sup>
+game controllers over USB (but not Bluetooth), Logitech Dual Action&trade; gamepads and
 flight sticks, or a car racing controller. Game controllers that use proprietary
 networking or pairing are not supported by default, but in general, the platform
 supports most PC-connectible joysticks and gamepads.</p>