Update about.html

about.html

@@ -33,7 +33,7 @@
     <h2>Who we are：</h2>
 <ul>
 <li>We are geeks, tinkerers, modders, hackers, and plain out pioneers.👋</br>
-<h2 id="-what-i-m-doing">👾 What we're doing</h2>
+<h2 id="-what-i-m-doing">👾 What we're doing：</h2>
 </li>
 <li>🐱‍💻 We are developers, and plain out geeks.</li>
 <li>🐧 Fun fact: Our founder likes to maintain the cross-server infrastructure.</li>