docs: Fix typos in the L preview docs. Bug: 16240486

Change-Id: I44b417b0a38fc2ce89220cd087d8f2bbd58562f8
diff --git a/docs/html/preview/notifications.jd b/docs/html/preview/notifications.jd
index 375fad9..44f46ea5 100644
--- a/docs/html/preview/notifications.jd
+++ b/docs/html/preview/notifications.jd
@@ -183,7 +183,7 @@
 <img src="{@docRoot}preview/images/notifications/ReplyAction.png" width="156px" height="156px"
   alt="" />
 
-  
+
 </div>
 
 
@@ -315,7 +315,7 @@
 priority</strong></h4>
 
 <p>Default, High, and Max priority are interruptive priority levels and risk interrupting the user
-from what they are doing. This should not not be taken lightly, so these levels should be  reserved
+from what they are doing. This should not be taken lightly, so these levels should be  reserved
 for notifications that:</p>
 
 <ul>
@@ -498,7 +498,7 @@
 
 <h3 style="clear:both" id="make_notifications_optional">Make notifications optional</h3>
 
-<p>Users should always be in control of notifications. Allow the user to diszable your app's
+<p>Users should always be in control of notifications. Allow the user to disable your app's
 notifications or change their alert properties, such as alert sound and whether to use vibration,
 by adding a notification settings item to your application settings.</p>