display latest topic showing twice at top of the content and button of the conte

Hi I have this code to display latest post by category the problem is when i had the same code inside a function so that I can use shortcode on the text editor, bet even thou I set a div and add the shortcode inside of it the function its just displaying at the twice at the top and bottom of all content. I just need to show once and exactly where I place within the div, can someone help me put please.

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