Fix markup for audio pages: tags, entities, etc

Change-Id: I6053a188fb51c9c8a5f7807780094c2dde543e2c
diff --git a/src/devices/audio/latency_measure.jd b/src/devices/audio/latency_measure.jd
index d0113d2..cf974bd 100644
--- a/src/devices/audio/latency_measure.jd
+++ b/src/devices/audio/latency_measure.jd
@@ -66,7 +66,7 @@
 
 <ol>
   <li>Run an app that periodically pulses the LED at
-  the same time it outputs audio. 
+  the same time it outputs audio.
   <p class="note"><strong>Note:</strong> To get useful results, it is crucial to use the correct
   APIs in the test app so that you're exercising the fast audio output path.
   See <a href="latency_design.html">Design For Reduced Latency</a> for