Unnecessary code generating in HTML website : <p>I developed HTML website. Used HTML and CSS only.</p>

<p>While looking into view source, it is showing unnecessary code at the end of the page and files too.</p>

<p>How can i solve this?</p>

<p><a href="https://i.stack.imgur.com/fT4G4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fT4G4.png" alt="enter image description here"></a></p>
