Doc change: fix typo.

Change-Id: Icd0d01a3047e86544dcea9188499e1433778184a

Author: ddougherty

docs/html/distribute/googleplay/about/monetizing.jd

@@ -42,7 +42,7 @@ manages the application download.</p>
 <h3 id="payment-methods">Convenient payment options</h3>
 
 <p>Users can purchase your products on Google Play using several convenient
-payment methods&mdash;credit cards, Direct Carrier Billing, and Google Play balance..</p>
+payment methods&mdash;credit cards, Direct Carrier Billing, and Google Play balance.</p>
 
 <p><span style="font-weight:500">Credit card</span> is the most common method of payment. Users can pay using any credit card
 that they’ve registered in Google Play. To make it easy for users to get started,