Fix description of IAM module (#1278)

Author: basil

aws-java-sdk-iam/src/main/resources/index.jelly

@@ -1,4 +1,4 @@
 <?jelly escape-by-default='true'?>
 <div>
-  EC2 module for the <a href="https://aws.amazon.com/sdk-for-java/">AWS SDK for Java</a>.
+  IAM module for the <a href="https://aws.amazon.com/sdk-for-java/">AWS SDK for Java</a>.
 </div>