docs: typo in training orientation

Change-Id: I9535713d7784146e96df5b347f2be38628ce7d2c

Author: scottamain

docs/html/training/index.jd

@@ -9,9 +9,9 @@ page.title=Orientation to Android Training
 <p>Welcome to Android Training. Here you'll find a collection of classes that aim to help you
 build great apps for Android, using best practices in a variety of framework topics.</p>
 
-<p>Each class explains the steps required to solve a problem or implement a feature using plenty of
-code snippets and sample code for you to use in your apps.</p>
+<p>Each class explains the steps required to solve a problem or implement a feature using code
+snippets and sample code for you to use in your apps.</p>
 
-<p>This is just the beginning. We plan to add many more classes, expand and refine existing classes,
-and build Training Courses that help you enhance your apps using an objective-oriented
-collections of classes.</p>
+<p>What you see now is just the beginning. We plan to add many more classes, expand and refine
+existing classes, and build Training Courses that help you enhance your apps using
+objective-oriented collections of classes.</p>