style(index.html): improve language list punctuation

- add comma after 'English (of course)' to properly separate items
- remove article 'a' before 'little Italian' for idiomatic expression

index.html

@@ -70,7 +70,7 @@
           systems, network settings...</p>
         <p>I also love hosting my own stuff like gitea, email, file server or http/s servers.</p>
         <p>And about myself, well idk, I live in Spain 🇪🇸, I love skiing, and I also like maths and physics. Generally
-          a nerd of any scientific branch. I speak Spanish, English (of course) and a <i><u>little</u></i> of Italian.
+          a nerd of any scientific branch. I speak Spanish, English (of course), and a <i><u>little</u></i> Italian.
         </p>
       </div>
       <div>