Fix incorrect link display (#38392)

* Work on an "incorrect link display" issue #38391

* Make the fixed link open in new tab

* Update files/en-us/learn_web_development/core/structuring_content/debugging_html/index.md

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Co-authored-by: Joshua Chen <[email protected]>

Author: youssef-el-atmani

files/en-us/learn_web_development/core/structuring_content/debugging_html/index.md

@@ -34,7 +34,7 @@ Writing HTML is fine, but what if something goes wrong, and you can't work out w
       <td>
         <ul>
           <li>The concept of permissive code, and what this means for HTML debugging.</li>
-          <li>Using the [HTML validator](https://validator.w3.org/) to detect markup errors.</li>
+          <li>Using the <a href="https://validator.w3.org/">HTML validator</a> to detect markup errors.</li>
           <li>Using the DOM inspector in your browser DevTools to dive deeper into your markup.</li>
         </ul>
       </td>