1.Log in to your dashboard--> layout- -> Edit HTML

2.Click on "Expand Widget Templates"

3.Scroll down to where you see this:

4.Copy below code and paste it immediately after the line <p><data:post.body/></p> .

Note : Remember to replace YOURBLOG with your real blog name.

5.Click on "Save Templates" and now you are done.Look at the below.

Demo