docs: remove trailing white space from jd files

Change-Id: Id7fb958460bf2f28d88c6120df0395690f32783a
diff --git a/docs/html/design/index.jd b/docs/html/design/index.jd
index b4e909f..1a0c125 100644
--- a/docs/html/design/index.jd
+++ b/docs/html/design/index.jd
@@ -18,7 +18,7 @@
         <h1 class="dac-hero-title">Up and running with material design</h1>
         <p class="dac-hero-description">
         Android uses a new design metaphor inspired by paper and ink that provides a reassuring
-        sense of tactility. Visit the <a href="https://www.google.com/design/spec/material-design/introduction.html">material design</a> site for more resources. 
+        sense of tactility. Visit the <a href="https://www.google.com/design/spec/material-design/introduction.html">material design</a> site for more resources.
         </p>
         <a class="dac-hero-cta" href="https://www.google.com/design/spec/material-design/introduction.html">
           <span class="dac-sprite dac-auto-chevron"></span>