Fix typos

Change-Id: I6406b33f52bd8fb126a9b346d1bfe30ca2c2144b
http://code.google.com/p/android/issues/detail?id=14614
http://code.google.com/p/android/issues/detail?id=3563
http://code.google.com/p/android/issues/detail?id=5960

Author: Michael Chan

core/java/android/database/sqlite/package.html

@@ -3,7 +3,7 @@
 Contains the SQLite database management
 classes that an application would use to manage its own private database.
 <p>
-Applications use these classes to maange private databases. If creating a
+Applications use these classes to manage private databases. If creating a
 content provider, you will probably have to use these classes to create and
 manage your own database to store content. See <a
 href="{@docRoot}guide/topics/providers/content-providers.html">Content Providers</a> to learn

core/java/android/os/CountDownTimer.java

@@ -25,7 +25,7 @@
  * Example of showing a 30 second countdown in a text field:
  *
  * <pre class="prettyprint">
- * new CountdownTimer(30000, 1000) {
+ * new CountDownTimer(30000, 1000) {
  *
  *     public void onTick(long millisUntilFinished) {
  *         mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);

docs/html/guide/topics/resources/drawable-resource.jd

@@ -1458,7 +1458,7 @@ In XML: <code>@[<em>package</em>:]drawable/<em>filename</em></code>
         android:gradientRadius="<em>integer</em>"
         android:startColor="<em>color</em>"
         android:type=["linear" | "radial" | "sweep"]
-        android:usesLevel=["true" | "false"] /&gt;
+        android:useLevel=["true" | "false"] /&gt;
     &lt;<a href="#padding-element">padding</a>
         android:left="<em>integer</em>"
         android:top="<em>integer</em>"