fix typos in docs

draw your graphics into a View when you want to display a static graphic or predefined animation, within 

an otherwise static application. Read <a href="#draw-to-view">Simple Graphics Inside a View</a>.</li>

<p>Option "b," drawing to a Canvas, is better when you're application needs to regularly re-draw itself.

<p>Option "b," drawing to a Canvas, is better when your application needs to regularly re-draw itself.

Basically, any video game should be drawing to the Canvas on its own. However, there's more than 

one way to do this: </p>

<ul>

<h3 id="on-view">On a View</h3>

<p>If you're application does not require a significant amount of processing or 

<p>If your application does not require a significant amount of processing or

frame-rate speed (perhaps for a chess game, a snake game, 

or another slowly-animated application), then you should consider creating a custom View component

and drawing with a Canvas in <code>{@link android.view.View#onDraw(Canvas) View.onDraw()}</code>.