fixes nit of extended underline appearance

Author: argyleink

tooltips/index.html

@@ -169,7 +169,7 @@
       </div>  
     </menu>
 
-    <p>The <abbr title>HTML <tool-tip inert role="tooltip" tip-position="top">Hyper Text Markup Language</tool-tip></abbr> abbr element.</p>
+    <p>The <abbr title>HTML<tool-tip inert role="tooltip" tip-position="top">Hyper Text Markup Language</tool-tip></abbr> abbr element.</p>
 
     <picture>
       <img alt="The GUI Challenges skull logo" width="100" src="https://gui-challenges.web.app/dialog/dist/assets/favicon.cb17c595.svg">