add punctuation

Author: brandonmwest

index.html

@@ -20,7 +20,7 @@ <h1>
         <hr/>
         <p>
             Create an <a href="https://aws.amazon.com/free/">AWS Account</a>, attach the necessary <a
-                href="policy.json"> IAM policy</a>, and enter your Access Id and Secret Key below
+                href="policy.json"> IAM policy</a>, and enter your Access Id and Secret Key below.
         </p>
 
         <div id="error" class="isa_error"></div>